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Welding helmet having a button
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Patent number D786509
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Issue date May 9, 2017
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3M Innovative Properties Company
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Niklas Lilenthal
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D29 - Equipment for safety, protection, and rescue
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Pivoting headgear system
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Patent number 9,474,319
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Issue date Oct 25, 2016
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3M Innovative Properties Company
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Lars-Olov Ahlgren
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A42 - HEADWEAR
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Welding helmet visor
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Patent number D539988
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Issue date Apr 3, 2007
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3M Innovative Properties Company
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David Crafoord
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D29 - Equipment for safety, protection, and rescue
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Ear portion of a welding helmet
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Patent number D533313
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Issue date Dec 5, 2006
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3M Innovative Properties Company
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Kjell I. Mases
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D29 - Equipment for safety, protection, and rescue
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Top portion of a welding helmet
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Patent number D532939
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Issue date Nov 28, 2006
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3M Innovative Properties Company
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Oskar E. Juhlin
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D29 - Equipment for safety, protection, and rescue
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Side portion of a welding helmet
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Patent number D532560
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Issue date Nov 21, 2006
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3M Innovative Properties Company
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Lennart C. Fredriksson
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D29 - Equipment for safety, protection, and rescue
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Side portion of a welding helmet
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Patent number D526097
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Issue date Aug 1, 2006
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3M Innovative Properties Company
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Niklas Lilenthal
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D29 - Equipment for safety, protection, and rescue
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Welding helmet lens frame
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Patent number D525395
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Issue date Jul 18, 2006
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3M Innovative Properties Company
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Jonas D. Fridholm
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D29 - Equipment for safety, protection, and rescue
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