Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1983-12-02
1986-05-13
Zarfas, Louis S.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D02838044
REFERENCES:
patent: D223776 (1972-06-01), Gruett
patent: 2643546 (1953-06-01), Boehm
patent: 3768309 (1973-10-01), Hart
patent: 4050305 (1977-09-01), Evans
Flowmeters for Laboratory & Industrial Use By Kontes .COPYRGT.1962, p. 10-Bantam-Meter at top left.
Matheson Gas Products, Inc.
Zarfas Louis S,.
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