US Patent D746974 Exhalation valve flap

Patent D746974 was granted and assigned to 3M on January, 2016 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Patent Applicant

Current Assignee

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

D7469740

Patent Inventor Names

Caroline M. Ylitalo0

Philip G. Martin0

Date of Patent

January 5, 2016

Patent Application Number

294607940

Date Filed

July 15, 2013

Patent Citations Received

‌

US Patent D1025346 Liner for respirator mask

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US Patent D1019935 Liner for respirator mask

Patent Primary Examiner

‌

Deanna L Pratt

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