U.S. patent number D521,840 [Application Number D/222,957] was granted by the patent office on 2006-05-30 for head of a hammer. Invention is credited to Yi-Kung Hung.
United States Patent | D521,840 |
Hung | May 30, 2006 |
Inventors: | Hung; Yi-Kung (Changhua Hsien, TW) |
---|---|
Appl. No.: | D/222,957 |
Filed: | February 8, 2005 |
Current U.S. Class: | D8/78; D8/76 |
Current International Class: | 0802 |
Field of Search: | ;D8/75,76,77,78,79,80,81 ;81/19,20,21,22,23 ;7/143,144,145,146 ;254/26R,26E ;30/308.1,308.2 |
D118700 | January 1940 | Griffith |
3233643 | February 1966 | Reuterfors |
3712284 | January 1973 | Porter |
4242780 | January 1981 | Littman |
4300606 | November 1981 | Branson |
4732058 | March 1988 | Chung |
4890518 | January 1990 | Floyd |
D386380 | November 1997 | Villarreal |
6266834 | July 2001 | Walsh et al. |
D478265 | August 2003 | Chen |
Ben Meadows Catalog, Fall 2002, p. 109, axes, found on Google Catalogs search engine. cited by examiner . Diamond Pacific Catalog, 2002, p. 98, hammers, found on Google Catalogs Search engine. cited by examiner. |
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