Number | Date | Country | Kind |
---|---|---|---|
55-147706 | Oct 1980 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3383574 | Manteuffel | May 1968 | |
3517289 | Brunner | Jun 1970 | |
3819268 | Johnson | Jun 1974 | |
4096419 | Wren | Jun 1978 |
Entry |
---|
King; "Tachometer Circuits"-IBM Bulletin-vol. 23, No. 3--Aug. 1980--pp. 962-963. |