Protective helmet

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Description

FIG. 1 is a front perspective view of a protective helmet showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The details shown in broken lines form no part of the claimed design.

Claims

The ornamental design for a protective helmet, as shown and described.

Referenced Cited
U.S. Patent Documents
D482503 November 18, 2003 Huh
D518745 April 11, 2006 Kim
D518923 April 11, 2006 Curran et al.
D540989 April 17, 2007 Huh
D584003 December 30, 2008 Juhlin
D585160 January 20, 2009 Juhlin
D585604 January 27, 2009 Martin
D586986 February 24, 2009 Loveder
D590547 April 14, 2009 Brace et al.
D638586 May 24, 2011 Aaskov et al.
Patent History
Patent number: D674152
Type: Grant
Filed: Mar 12, 2012
Date of Patent: Jan 8, 2013
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Björn Daniels (Vikarbyn), Oskar Juhlin (Gustavsberg), Martin L. E. Birath (Lidingö), Henrik Olsson (Stockholm), Kristian N. Eke (Stockholm)
Primary Examiner: Ruth McInroy
Application Number: 29/415,517
Classifications
Current U.S. Class: Element Or Attachment (D29/122)