Number | Date | Country | Kind |
---|---|---|---|
8803156 | Feb 1988 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
2539434 | Keith | Jan 1951 | |
2605215 | Coghlan | Jul 1952 | |
2917532 | Watkins | Dec 1959 | |
3928170 | Takahashi et al. | Dec 1975 | |
3941681 | Saegusa et al. | Mar 1976 | |
4599478 | Kamisaka et al. | Jul 1986 | |
4599479 | Okamoto et al. | Jul 1986 | |
4613426 | Okamoto et al. | Sep 1986 | |
4663022 | Gomi et al. | May 1987 |
Number | Date | Country |
---|---|---|
1518085 | Jul 1978 | GBX |
Entry |
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Abstract for Japanese Patent Application No. 62-96589. |