Liquid level gauge

Details Liquid level gauge Liquid level gauge

1985-05-13

1988-01-05

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

Patent

active

D02935589

REFERENCES:
patent: D129259 (1941-09-01), Johnson
patent: D252617 (1979-08-01), McCloskey
patent: 2416059 (1947-02-01), Marchment
patent: 2484690 (1949-10-01), De Giers
patent: 3113282 (1963-12-01), Coleman
patent: 3555904 (1971-01-01), Lenker
patent: 3813941 (1974-06-01), Miguel
patent: 4342224 (1902-08-01), Hara
patent: 4384184 (1983-05-01), Alverez
patent: 4589282 (1986-05-01), Dumery
patent: 4641523 (1987-02-01), Andreasson

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