U.S. patent number D449,100 [Application Number D/128,491] was granted by the patent office on 2001-10-09 for hvac filter. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to James F. Pitzen, Douglas C. Sundet.
United States Patent | D449,100 |
Sundet , et al. | October 9, 2001 |
Inventors: | Sundet; Douglas C. (Hudson, WI), Pitzen; James F. (Maplewood, MN) |
---|---|
Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
Appl. No.: | D/128,491 |
Filed: | August 25, 2000 |
Current U.S. Class: | D23/365 |
Current International Class: | 2304 |
Field of Search: | ;D23/365 ;55/DIG.31,486,525 |
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