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   <title>Form  4          Petra Acquisition Inc.    For: Jan 10  Filed by: Feis Lawrence</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Petra+Acquisition+Inc.++++For%3A+Jan+10++Filed+by%3A+Feis+Lawrence/19448663.html</link>
   <description>Visit StreetInsider.com at http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Petra+Acquisition+Inc.++++For%3A+Jan+10++Filed+by%3A+Feis+Lawrence/19448663.html for the full story.</description>
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   <pubDate>Tue, 11 Jan 2022 16:00:00 -0500</pubDate>
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   <title>Form  4          Petra Acquisition Inc.    For: Jan 10  Filed by: Feis Lawrence</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Petra+Acquisition+Inc.++++For%3A+Jan+10++Filed+by%3A+Feis+Lawrence/19448663.html</link>
   <description>Visit StreetInsider.com at http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Petra+Acquisition+Inc.++++For%3A+Jan+10++Filed+by%3A+Feis+Lawrence/19448663.html for the full story.</description>
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   <pubDate>Tue, 11 Jan 2022 16:00:00 -0500</pubDate>
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   <title>Form  SC 13G/A   Petra Acquisition Inc.                 Filed by: Feis Lawrence</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++SC+13GA+++Petra+Acquisition+Inc.+++++++++++++++++Filed+by%3A+Feis+Lawrence/19448557.html</link>
   <description>Visit StreetInsider.com at http://www.streetinsider.com/SEC+Filings/Form++SC+13GA+++Petra+Acquisition+Inc.+++++++++++++++++Filed+by%3A+Feis+Lawrence/19448557.html for the full story.</description>
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   <pubDate>Tue, 11 Jan 2022 15:35:00 -0500</pubDate>
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   <title>Form  8-K        Petra Acquisition Inc.    For: Dec 21</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Petra+Acquisition+Inc.++++For%3A+Dec+21/19390287.html</link>
   <description>Visit StreetInsider.com at http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Petra+Acquisition+Inc.++++For%3A+Dec+21/19390287.html for the full story.</description>
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   <pubDate>Thu, 23 Dec 2021 17:28:00 -0500</pubDate>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
   <link>http://www.streetinsider.com/Press+Releases/Petra+Acquisition%2C+Inc.+Announces+Share+Redemption+Backstop+and+Forward+Purchase+Agreements+in+Connection+with+Revelation+Biosciences%2C+Inc.+Business+Combination/19382683.html</link>
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   <pubDate>Wed, 22 Dec 2021 09:00:00 -0500</pubDate>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
   <link>http://www.streetinsider.com/Globe+Newswire/Petra+Acquisition%2C+Inc.+Announces+Share+Redemption+Backstop+and+Forward+Purchase+Agreements+in+Connection+with+Revelation+Biosciences%2C+Inc.+Business+Combination/19382683.html</link>
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   <title>Petra Acquisition, Inc. Announces Share Redemption Backstop and Forward Purchase Agreements in Connection with Revelation Biosciences, Inc. Business Combination</title>
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   <title>Form  DEFA14A    Petra Acquisition Inc.               </title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++DEFA14A++++Petra+Acquisition+Inc.+++++++++++++++/19368424.html</link>
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   <pubDate>Fri, 17 Dec 2021 15:34:00 -0500</pubDate>
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   <title>Form  8-K        Petra Acquisition Inc.    For: Dec 13</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Petra+Acquisition+Inc.++++For%3A+Dec+13/19368414.html</link>
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   <pubDate>Fri, 17 Dec 2021 15:32:00 -0500</pubDate>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
   <link>http://www.streetinsider.com/Press+Releases/Petra+Acquisition%2C+Inc.+Announces+Special+Meeting+of+Stockholders+to%C2%A0Approve+Business+Combination+with+Revelation+Biosciences%2C+Inc./19363370.html</link>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
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   <title>Petra Acquisition, Inc. Announces Special Meeting of Stockholders to Approve Business Combination with Revelation Biosciences, Inc.</title>
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   <pubDate>Thu, 16 Dec 2021 16:15:00 -0500</pubDate>
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   <title>Form  424B3      Petra Acquisition Inc.               </title>
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   <pubDate>Thu, 16 Dec 2021 16:05:00 -0500</pubDate>
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   <title>Form  EFFECT     Petra Acquisition Inc.               </title>
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   <pubDate>Wed, 15 Dec 2021 06:06:00 -0500</pubDate>
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   <title>Form  S-4/A      Petra Acquisition Inc.               </title>
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   <pubDate>Mon, 13 Dec 2021 16:26:00 -0500</pubDate>
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