Protective helmet
Description
Claims
The ornamental design for a protective helmet, as shown and described.
Referenced Cited
U.S. Patent Documents
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| D602641 | October 20, 2009 | Ho |
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Patent History
Patent number: D743629
Type: Grant
Filed: Feb 17, 2014
Date of Patent: Nov 17, 2015
Inventor: Chien-Chih Peng (Irvine, CA)
Primary Examiner: Ruth McInroy
Application Number: 29/482,305
Type: Grant
Filed: Feb 17, 2014
Date of Patent: Nov 17, 2015
Inventor: Chien-Chih Peng (Irvine, CA)
Primary Examiner: Ruth McInroy
Application Number: 29/482,305
Classifications
Current U.S. Class:
Cranial (D29/102)