US Patent D677436 Welding helmet feature contour

Patent D677436 was granted and assigned to 3M on March, 2013 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

D677436

Patent Inventor Names

Martin Birath0

Björn Daniels0

Oskar Juhlin0

Date of Patent

March 5, 2013

Patent Application Number

29428100

Date Filed

July 26, 2012

Patent Citations Received

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US Patent D1010939 Welding helmet

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US Patent D1010940 Welding helmet

Patent Primary Examiner

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Elizabeth J Oswecki

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