U.S. patent number D272,646 [Application Number 06/334,111] was granted by the patent office on 1984-02-14 for room air cleaner. This patent grant is currently assigned to North American Philips Corporation. Invention is credited to Ronald L. Muller, Masao Tsuji.
United States Patent | D272,646 |
Tsuji , et al. | February 14, 1984 |
Inventors: | Tsuji; Masao (Old Lyme, CT), Muller; Ronald L. (Old Saybrook, CT) |
---|---|
Assignee: | North American Philips
Corporation (New York, NY) |
Appl. No.: | 06/334,111 |
Filed: | December 24, 1981 |
Current U.S. Class: | D23/364 |
Current International Class: | D2304 |
Field of Search: | ;D23/139-162 ;55/138,316,385G,467,472,279 ;416/247R ;417/361 |
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4148618 | April 1979 | Christenson et al. |
4272261 | June 1981 | Lynch et al. |
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