Number | Date | Country | Kind |
---|---|---|---|
58-29301 | Feb 1983 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3328516 | Usami et al. | Jun 1967 | |
3691475 | Mouri et al. | Sep 1972 | |
3786179 | Mouri et al. | Jan 1974 | |
4183053 | Tomii et al. | Jan 1980 | |
4408223 | Midland | Oct 1983 |
Number | Date | Country |
---|---|---|
43888 | Apr 1981 | JPX |
149883 | Nov 1981 | JPX |
44387 | Mar 1982 | JPX |
Entry |
---|
Macwhirter, Ian, "Beam Indexing Tubes", Wireless World, Feb. 1961. pp. 92-98. |