Pivot knob portion of a welding helmet
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Description
The details shown in broken lines form no part of the claimed design. The surface shading is provided to illustrate contour only.
Claims
The ornamental design for a pivot knob portion of a welding helmet, as shown and described.
Referenced Cited
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Patent History
Patent number: D589654
Type: Grant
Filed: Nov 15, 2007
Date of Patent: Mar 31, 2009
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Oskar E. Juhlin (Gustavsberg)
Primary Examiner: Ruth McInroy
Attorney: Anna A. Wetzels
Application Number: 29/297,644
Type: Grant
Filed: Nov 15, 2007
Date of Patent: Mar 31, 2009
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventor: Oskar E. Juhlin (Gustavsberg)
Primary Examiner: Ruth McInroy
Attorney: Anna A. Wetzels
Application Number: 29/297,644
Classifications
Current U.S. Class:
Element Or Attachment (D29/122)