Number | Date | Country | Kind |
---|---|---|---|
59-191009 | Sep 1984 | JPX | |
59-227149 | Oct 1984 | JPX | |
59-233639 | Nov 1984 | JPX | |
60-70273 | Apr 1985 | JPX | |
60-198801 | Sep 1985 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2795731 | Aiken | Jun 1957 | |
2880365 | Law et al. | Mar 1959 | |
3215888 | Havn et al. | Nov 1965 | |
3323000 | Mancebo | May 1967 | |
3683224 | Lea | Aug 1972 | |
3890541 | McCarthy et al. | Jun 1975 | |
3935500 | Oess et al. | Jan 1976 | |
4118651 | Scott | Oct 1978 | |
4362966 | Credelle | Dec 1982 | |
4417184 | Takesako et al. | Nov 1983 | |
4451846 | Iyehara et al. | May 1984 |
Entry |
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Spangernberg, K. R., "Vacuum Tubes", 1948 McGraw-Hill, pp. 101 and 412. |