Number | Date | Country | Kind |
---|---|---|---|
3001975 | Jan 1980 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
1129474 | Fortescue | Feb 1915 | |
1898931 | Bahrmann | Feb 1933 | |
1912389 | Smith | Jun 1933 | |
2116404 | Montsinger | May 1938 | |
3546580 | Williams | Dec 1970 | |
3657632 | Miyoshi | Apr 1972 | |
3813574 | Sato | May 1974 | |
3904928 | Sawada et al. | Sep 1975 | |
3936719 | Miyoshi et al. | Feb 1976 | |
3947749 | Kimura et al. | Mar 1976 | |
4247889 | Riechmann | Jan 1981 |
Number | Date | Country |
---|---|---|
2332711 | Aug 1974 | DEX |
2264451 | Feb 1975 | DEX |
2607368 | Aug 1977 | DEX |
2207386 | Jun 1974 | FRX |
Entry |
---|
Funktechnik, 1979, No. 4, pp. T183-184. |