Number | Name | Date | Kind |
---|---|---|---|
3236652 | Kennard et al. | Feb 1966 | |
4433048 | Solberg et al. | Feb 1984 | |
4435501 | Maskasky | Mar 1984 | |
4439520 | Kofron et al. | Mar 1984 | |
4888273 | Himmelwright et al. | Dec 1989 | |
5250403 | Antoniades et al. | Oct 1993 |
Entry |
---|
Buhr et al, Research Disclosure, vol. 253, Item 25330, May 1985. |