Number | Date | Country | Kind |
---|---|---|---|
54/172005 | Dec 1979 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3722991 | Edhlund | Mar 1973 | |
3772465 | Vlahos et al. | Nov 1973 | |
3819854 | Kolb | Jun 1974 | |
3953868 | Kawamura et al. | Apr 1976 | |
3987467 | Cowles | Oct 1976 | |
4053909 | Shinoda et al. | Oct 1979 | |
4167315 | Nanba et al. | Sep 1979 | |
4192597 | Ting | Mar 1980 |
Number | Date | Country |
---|---|---|
2449093 | Apr 1975 | DEX |
Entry |
---|
JP-A-55-57836 (Pat. Abstract of Japan, vol. 4, No. 100, Jul. 18, 1981, p. 6P19). |