Number | Date | Country | Kind |
---|---|---|---|
63-252501 | Oct 1988 | JPX | |
1-002203 | Jan 1989 | JPX | |
1-184742 | Jul 1989 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2754279 | Hall | Jul 1956 | |
2865873 | Hodgins et al. | Dec 1958 | |
3615476 | Cassiers et al. | Oct 1971 | |
3617274 | Lin | Nov 1971 | |
4172724 | Matsumoto et al. | Oct 1979 | |
4173474 | Tanaka et al. | Nov 1979 | |
4201441 | Matsumoto et al. | May 1980 | |
4258111 | Matsumoto et al. | Mar 1981 | |
4287277 | Matsumoto et al. | Sep 1981 | |
4769300 | Butcher | Sep 1988 | |
4769301 | Butcher et al. | Sep 1988 |
Number | Date | Country |
---|---|---|
2139777 | Nov 1984 | GBX |
Entry |
---|
Patent Abstracts of Japan, 140 P 828, 1988 & JPA 63-254485, Oct. 21, 1988. |
Patent Abstracts of Japan, 28 P 834, 1988 & JPA 63-266478, Nov. 2, 1988. |