Number | Date | Country | Kind |
---|---|---|---|
3-317419 | Nov 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3429655 | Case | Feb 1969 | |
3792154 | Cathers et al. | Feb 1974 | |
3914388 | Cathers et al. | Oct 1975 | |
4116863 | Berton et al. | Sep 1978 | |
4229317 | Babad et al. | Oct 1980 | |
4275045 | Anav et al. | Jun 1981 | |
4362660 | Partridge et al. | Dec 1982 | |
4461711 | Behrens | Jul 1984 |
Entry |
---|
United States Statutory Invention Registration, Reg. No. H800, Beahm et al., Jul. 3, 1990. |