U.S. patent number D523,728 [Application Number D/217,153] was granted by the patent office on 2006-06-27 for hinge for a welding helmet window. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to Desmond T. Curran, Peter D. Lee, Daniel Martin.
United States Patent | D523,728 |
Lee , et al. | June 27, 2006 |
Inventors: | Lee; Peter D. (Hartlepool, GB), Curran; Desmond T. (Durham, GB), Martin; Daniel (Whalton, GB) |
---|---|
Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
Appl. No.: | D/217,153 |
Filed: | November 12, 2004 |
Current U.S. Class: | D8/323 |
Current International Class: | 0806 |
Field of Search: | ;D29/102-103,107-110,122 ;D2/891 ;D24/137,150,172 ;D26/39 ;2/8,424,432 ;349/14 ;219/147 ;16/227,384,387,388,390 |
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Product literature for Racal Health & Safety Powered Respirators. cited by other . Picture of 9000 Speedglas by 3M. cited by other . Picture of Welding Headtop Breathe Easy.TM. 17 by 3M. cited by other . Picture of Welding Shield by Euromaski. cited by other . Picture of Satellite Shield by Optrel. cited by other . Picture of Welding Shield, Air Visor K Series, by Willson. cited by other. |
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