Number | Date | Country | Kind |
---|---|---|---|
1-326866 | Dec 1989 | JPX | |
2-38768 | Feb 1990 | JPX | |
2-294424 | Oct 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3346689 | Parstorfer | Oct 1967 | |
3398232 | Hoffman | Aug 1968 | |
3484654 | Honeiser | Dec 1969 | |
3843951 | Maheux | Oct 1974 | |
3987386 | Valliere | Oct 1976 | |
4075591 | Haas | Feb 1978 | |
4161346 | Cherian et al. | Jul 1979 | |
4199209 | Cherian et al. | Apr 1980 | |
4322698 | Takashi et al. | Mar 1982 | |
4328531 | Nagashima et al. | May 1982 | |
4342143 | Jennings | Aug 1982 | |
4371744 | Badet et al. | Feb 1983 | |
4437140 | Ohyama et al. | Mar 1984 | |
4494100 | Stengel et al. | Jan 1985 | |
4754371 | Nitta et al. | Jun 1988 | |
4764848 | Simpson | Aug 1988 | |
4874721 | Kimura et al. | Oct 1989 | |
4899118 | Polinski, Sr. | Feb 1990 |
Number | Date | Country |
---|---|---|
76455 | Jan 1984 | JPX |
279622 | Apr 1987 | JPX |
0061015 | Mar 1989 | JPX |
Entry |
---|
"Basic Electronics" 4th Ed., Bernard Grob, 1977, pp 359 and 370. |