Tachometer

Details Tachometer Tachometer

1987-11-12

1990-10-16

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

Patent

active

D03113477

REFERENCES:
patent: D222503 (1971-10-01), Smith
patent: D234684 (1975-04-01), Olson
patent: D254960 (1980-05-01), Helm
patent: D268994 (1983-05-01), O'Driscoll
patent: D269165 (1983-05-01), Driscoll
patent: D297816 (1988-09-01), Dawson, Jr.
patent: 2802442 (1957-08-01), Helgeby
patent: 2961230 (1960-11-01), Moro
patent: 3313267 (1967-04-01), Casini
patent: 3644784 (1972-02-01), Dickey et al.
patent: 4242980 (1981-01-01), Go
patent: 4247855 (1981-01-01), Vede et al.
patent: 4802437 (1989-02-01), Felicetti
Road and Track, Avatar 8200, 5/79, p. 124.

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