Flowmeter

Details Flowmeter Flowmeter

1988-10-14

1989-07-04

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

Patent

active

D03019888

REFERENCES:
patent: D102948 (1937-01-01), Hayes
patent: D192699 (1962-05-01), Charles
patent: D237951 (1975-12-01), Simerl
patent: D278316 (1985-04-01), Bengston
patent: D282448 (1986-02-01), Hall
patent: D283204 (1986-04-01), McDonald
patent: 2949764 (1960-08-01), Knauth
patent: 3101615 (1963-08-01), Pavone
patent: 3301053 (1967-01-01), Walch
patent: 4700579 (1987-10-01), Hall
patent: 4719807 (1988-01-01), Jovicic

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