Number | Date | Country | Kind |
---|---|---|---|
8902812 | Nov 1989 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
1633775 | Esau | Jun 1927 | |
3339205 | Smitra | Aug 1967 | |
3716867 | Mayes et al. | Feb 1973 | |
4201990 | Altmayer | May 1980 | |
4486722 | Landt | Dec 1984 | |
4564843 | Cooper | Jan 1986 | |
4656483 | Jaquet | Apr 1987 |
Number | Date | Country |
---|---|---|
1949556 | Apr 1971 | DEX |
56-73904 | Jun 1981 | JPX |
2113922 | Aug 1983 | GBX |
Entry |
---|
"Programmable Antenna-tuning Unit and Its Use With Shortwave Transmitter SK 1/39 . . . ", News From Rohde & Schwartz, vol. 19, No. 24, 1970, By S. Neumann et al., pp. 21-24. |