Number | Date | Country | Kind |
---|---|---|---|
3045485 | Dec 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3854224 | Yamaji et al. | Dec 1974 | |
3880515 | Tanaka et al. | Apr 1975 | |
3997977 | Katayama et al. | Dec 1976 | |
4086705 | Wehr | May 1978 |
Number | Date | Country |
---|---|---|
972948 | Aug 1975 | CAX |
2363976 | Jun 1974 | DEX |
2365783 | Apr 1976 | DEX |
1966591 | May 1978 | DEX |
Entry |
---|
Patent Abstract, vol. 4, No. 86 (P-16) [568] Jun. 20, 1980, 149 P 16 and 150 P 16. |