Number | Date | Country | Kind |
---|---|---|---|
56-198488 | Dec 1981 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3440475 | Schiller et al. | Mar 1969 | |
3497757 | Zalm et al. | Jan 1970 | |
4298814 | Takanashi et al. | Nov 1981 | |
4355259 | Weiss | Oct 1982 |
Number | Date | Country |
---|---|---|
46-19714 | Jul 1971 | JPX |
47-23954 | Jul 1972 | JPX |
54-25962 | Aug 1979 | JPX |
545351 | Oct 1936 | GBX |
641581 | Aug 1950 | GBX |
715974 | Sep 1954 | GBX |
810101 | Mar 1959 | GBX |
857090 | Dec 1960 | GBX |
1264087 | Feb 1972 | GBX |
Entry |
---|
Peterson et al., "Indirectly Heated Cathode Construction", RCA Technical Notes, No. 173, Aug. 1958. |