Level gauge

Details Level gauge Level gauge

1993-07-08

1994-08-30

Douglas, Alan P.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D10101

Patent

active

D03500764

REFERENCES:
patent: D223775 (1972-06-01), Metzger
patent: D283804 (1986-05-01), Waters
patent: D283805 (1986-05-01), Waters
patent: D287343 (1986-12-01), Waters
patent: 4116065 (1978-09-01), Jensen
patent: 5078004 (1992-01-01), Nyseth
Oil-Right Corporation catalog, "Liquid Level Gages Section 8200", pp. 3, 4 and 8.

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