Digital tachometer design

Details Digital tachometer design Digital tachometer design

1977-12-29

1980-05-13

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D1004

Patent

active

D02549603

REFERENCES:
patent: D198913 (1964-08-01), Smith
patent: D251368 (1979-03-01), Katzmann
patent: D251370 (1979-03-01), Katzmann
Weston Cat. #07-107, 10/69, cover, AC/DC Digital Multimeter.
Gold Book, vol. 3/623, Sec. 4200, 1974-1975-Digital Thermometers at top.
DANA Cat., 3/75, Model Nos. 7570 & 7580, Frequency Counters.

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