Number | Name | Date | Kind |
---|---|---|---|
2416959 | Segal et al. | Mar 1947 | A |
2872741 | Krueger et al. | Feb 1959 | A |
3710455 | Liversidge et al. | Jan 1973 | A |
D245277 | Jenkins | Aug 1977 | S |
4508348 | Lapointe | Apr 1985 | A |
D334600 | Imohi | Apr 1993 | S |
D348483 | Chow et al. | Jul 1994 | S |
D349300 | Lau | Aug 1994 | S |
D353849 | Sasano | Dec 1994 | S |
5451178 | Yorozu et al. | Sep 1995 | A |
D389876 | Leung | Jan 1998 | S |
6353168 | Sosoka et al. | Mar 2002 | B1 |
Entry |
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Photos of competitor's product, resectively showing blocks in center and without blocks. |