Number | Date | Country | Kind |
---|---|---|---|
42 41 035.5 | Dec 1992 | DEX | |
43 20 562.3 | Jun 1993 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4273553 | Harms et al. | Jun 1981 | |
4325705 | Harms et al. | Apr 1982 | |
4394129 | Springer | Jul 1983 | |
4503224 | Harms et al. | Mar 1985 | |
4507476 | Niwa et al. | Mar 1985 | |
4550203 | Stockinger et al. | Oct 1985 | |
4631341 | Kayane et al. | Dec 1986 | |
4837320 | Harms et al. | Jun 1989 | |
4851528 | Stead et al. | Jul 1989 | |
5112971 | Akahuri et al. | May 1992 | |
5231172 | Beck et al. | Jul 1993 | |
5268457 | Tzikas | Dec 1993 | |
5274083 | Herd et al. | Dec 1993 |
Number | Date | Country |
---|---|---|
24676 | Mar 1981 | EPX |
87394 | Aug 1983 | EPX |
57-199878 | Dec 1982 | JPX |
63-072668 | Apr 1988 | JPX |
Entry |
---|
Feiccabrina et al. CA81 (17): 1056494 (1974). |
Patent Abstracts of Japan, vol. 12, No. 301 (C-521)(3148) Aug. 16, 1988. |