Fluid flow indicator

Details Fluid flow indicator Fluid flow indicator

1978-04-07

1980-07-22

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Volume, flow or rate

D1004

Patent

active

D02560003

REFERENCES:
patent: D53686 (1919-08-01), Martell
patent: D195226 (1963-05-01), Busillo
patent: D221476 (1971-08-01), Martin
patent: 3141331 (1964-07-01), Wilson
patent: 4050305 (1977-09-01), Evans
Schutte & Koerting Bulletin M-1-12/65-Flow Measuring Instruments.

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