Number | Date | Country | Kind |
---|---|---|---|
3-047406 | Feb 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4614687 | Nishimatsu et al. | Sep 1986 | |
4710421 | Ono et al. | Dec 1987 | |
4720412 | Katoh et al. | Jan 1988 | |
4780353 | Takahashi et al. | Nov 1988 | |
4804736 | Utsumi et al. | Feb 1988 | |
5051292 | Katoh et al. | Sep 1991 |
Number | Date | Country |
---|---|---|
0381213 | Aug 1990 | EPX |
Entry |
---|
Teijin, Patent Abstracts of Japan, vol. 11, No. 293 (P-619) (2740), 1987. |