Welding helmet
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The broken line showing forms no part of the claimed design, and the shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.
Claims
The ornamental design for a welding helmet, as shown and described.
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Type: Grant
Filed: Oct 26, 2018
Date of Patent: Aug 11, 2020
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Linus P. Bastman (Orsa), Emil R. Eriksson (Falun), Johan M. P. Hansson (Borlänge), Erik Oskar Juhlin (Gustavsberg)
Primary Examiner: Robert A Delehanty
Application Number: 29/668,008