Patent Grant
D276454
| Number | Name | Date | Kind |
|---|---|---|---|
| D255825 | Hardy | Jul 1980 | |
| D266449 | Foreman | Oct 1982 | |
| D270178 | Heck | Aug 1983 | |
| 2918220 | Crow | Dec 1959 | |
| 2981482 | Warren | Apr 1961 | |
| 3043522 | Ryerson | Jul 1962 | |
| 3080123 | Erns | Mar 1963 | |
| 3103313 | Raem | Sep 1963 | |
| 3193203 | Crow | Jul 1965 | |
| 3244373 | Hait | Apr 1966 | |
| 3856207 | Rees, Jr. | Dec 1974 | |
| 3884416 | King | May 1975 | |
| 3912171 | Johnson | Oct 1975 | |
| 3918642 | Best | Nov 1975 | |
| 3930617 | Dunmire | Jan 1976 | |
| 3957205 | Costa | May 1976 | |
| 3968934 | Healy | Jul 1976 | |
| 4177944 | Wichman | Dec 1979 | |
| 4205788 | Bruninga | Jun 1980 |
