Patent Grant
D426128
| Number | Name | Date | Kind |
|---|---|---|---|
| D201538 | Willis | Jun 1965 | |
| D237582 | Frederick | Nov 1975 | |
| D262186 | Royce | Dec 1981 | |
| D267469 | Crowder | Jan 1983 | |
| D275261 | Crowder | Aug 1984 | |
| D291402 | Square | Aug 1987 | |
| D300111 | Square | Mar 1989 | |
| D347780 | Hreha | Jun 1994 | |
| D369734 | Sanger | May 1996 | |
| D376087 | Spirer | Dec 1996 | |
| D376089 | Allen | Dec 1996 | |
| D381884 | Spirer | Aug 1997 | |
| 619608 | Penny | Feb 1899 | |
| 2754863 | Yearley | Jul 1956 | |
| 2765827 | Hall | Oct 1956 | |
| 2879030 | Loretitsch | Mar 1959 | |
| 2884969 | Lay | May 1959 | |
| 2983297 | Wilson | May 1961 | |
| 4723582 | Caspall | Feb 1988 | |
| 5029496 | Catania | Jul 1991 | |
| 5289742 | Vaughan, Jr. | Mar 1994 | |
| 5588343 | Rust et al. | Dec 1996 |
