U.S. patent number D507,385 [Application Number D/176,115] was granted by the patent office on 2005-07-12 for rotary brush vacuum cleaner. Invention is credited to Mei-Chun Ma.
United States Patent | D507,385 |
Ma | July 12, 2005 |
Inventors: | Ma; Mei-Chun (Wong Tai Sin, Kowloon, HK) |
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Appl. No.: | D/176,115 |
Filed: | February 18, 2003 |
Current U.S. Class: | D32/18 |
Current International Class: | 1505 |
Field of Search: | ;D32/17-18,31-34 ;15/347,344,329,353 ;96/225-226 |
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