Number | Date | Country | Kind |
---|---|---|---|
03413/88 | Sep 1988 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
2786179 | Arnold et al. | Mar 1957 | |
4205266 | Lichtenberg | May 1980 | |
4402142 | Dinsmore | Sep 1983 | |
4463314 | Wilson | Jul 1984 | |
4649755 | Volz | Mar 1987 | |
4694583 | Blaney | Sep 1987 | |
4749939 | Seitz | Jun 1988 |
Number | Date | Country |
---|---|---|
0157470 | Oct 1985 | EPX |
1105514 | May 1958 | DEX |
2921546 | Dec 1980 | DEX |
659138 | Dec 1986 | CHX |
Entry |
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Otto Limann, Elecktronik ohne Ballast, 4th Edition, 1975, Franzis Verlag Munchen, p. 139. |
ATM Archiv fur Technisches Messen, V392-1, Aug. 1952, pp. 175-178. |