U.S. patent number D539,358 [Application Number D/255,106] was granted by the patent office on 2007-03-27 for rotor blades for a toy helicopter. This patent grant is currently assigned to Global Billion International, Ltd.. Invention is credited to Quan Guan Shi.
United States Patent | D539,358 |
Shi | March 27, 2007 |
Inventors: | Shi; Quan Guan (Hong Kong, HK) |
---|---|
Assignee: | Global Billion International,
Ltd. (Hong Kong, HK) |
Appl. No.: | D/255,106 |
Filed: | March 3, 2006 |
Current U.S. Class: | D21/441; D21/442; D21/453 |
Current International Class: | 2101 |
Field of Search: | ;D21/436,437,441-444,450,453,455 ;D12/325,327,328,329,345 ;446/34-68 ;244/17.11-17.27 |
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