Patent Grant
D389580
| Number | Name | Date | Kind |
|---|---|---|---|
| 2605152 | Krewson | Jul 1952 | |
| 2609261 | Parker | Sep 1952 | |
| 2658211 | Bendersky | Nov 1953 | |
| 2819406 | Frecking, Jr. et al. | Jan 1958 | |
| 2972505 | Wickgenannt | Feb 1961 | |
| 3046072 | Douglass, Jr. et al. | Jul 1962 | |
| 3581088 | Engels | May 1971 | |
| 3614085 | Cunningham | Oct 1971 | |
| 4045011 | Ford | Aug 1977 | |
| 4698837 | Van Steenburg | Oct 1987 | |
| 4766892 | Kreitman | Aug 1988 | |
| 4836113 | Waddell et al. | Jun 1989 | |
| 4858903 | Tari et al. | Aug 1989 | |
| 5038434 | Navarrette | Aug 1991 | |
| 5135210 | Michelson | Aug 1992 | |
| 5226070 | Ariba et al. | Jul 1993 | |
| 5243639 | Johnson | Sep 1993 | |
| 5287575 | Allen et al. | Feb 1994 | |
| 5359741 | Lang | Nov 1994 | |
| 5362021 | Phillips | Nov 1994 | |
| 5443233 | Kabanek | Aug 1995 | |
| 5452729 | Bergsbaken et al. | Sep 1995 |
