Patent Grant
D424477
| Number | Name | Date | Kind |
|---|---|---|---|
| D237477 | Lay | Nov 1975 | |
| D256901 | Carr, Jr. et al. | Sep 1980 | |
| D281487 | Chapman | Nov 1985 | |
| D286143 | Lund | Oct 1986 | |
| D294242 | O'Neill | Feb 1988 | |
| D295084 | Weber | Apr 1988 | |
| D305017 | Lund | Dec 1989 | |
| D306848 | Macor | Mar 1990 | |
| D316391 | Lund | Apr 1991 | |
| D318829 | Wada et al. | Aug 1991 | |
| D332072 | Shirlin et al. | Dec 1992 | |
| D409524 | McKinney | Aug 1998 | |
| 1275400 | Crowell | Aug 1918 | |
| 4159843 | Crossman | Jul 1979 | |
| 4318565 | Lay | Mar 1982 | |
| 4707014 | Rich | Nov 1987 | |
| 5018779 | Lund | May 1991 |
