U.S. patent number D574,072 [Application Number D/296,617] was granted by the patent office on 2008-07-29 for room air purifier. This patent grant is currently assigned to 3M Innovative Properties Company. Invention is credited to Casey L. Carlson, Glendon D. Kappel.
United States Patent | D574,072 |
Carlson , et al. | July 29, 2008 |
Inventors: | Carlson; Casey L. (Edina, MN), Kappel; Glendon D. (Eagan, MN) |
---|---|
Assignee: | 3M Innovative Properties
Company (St. Paul, MN) |
Appl. No.: | D/296,617 |
Filed: | October 24, 2007 |
Current U.S. Class: | D23/364 |
Current International Class: | 2304 |
Field of Search: | ;D23/364,355,356,359,360,362,352,366,369,332,333,335,336,342,351 ;422/120,122 ;55/356,473,504 ;96/63 ;D14/188,170,172 ;261/DIG.17,DIG.65,DIG.88,DIG.31 |
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