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US Patent D663900 Hearing protector ear cups

Patent D663900 was granted and assigned to 3M on July, 2012 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

D6639000

Patent Inventor Names

August Michael0

Martin Birath0

Oskar Juhlin0

Robert Karlsson0

Hans Nystrom0

Date of Patent

July 17, 2012

Patent Application Number

293997510

Date Filed

August 18, 2011

Patent Citations Received

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US Patent D998592 Ear defender ear cup

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US Patent D998591 Ear cup

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US Patent D1000413 Ear defender

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US Patent D1001727 Battery pack

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US Patent D1021855 Headphone

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US Patent D1024004 Electronic hearing protector

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US Patent D1033751 Ear protector

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Patent Primary Examiner

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Elizabeth J Oswecki

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