Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1983-10-06
1986-05-27
Vales, Carmen H.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
Patent
active
D02839881
REFERENCES:
patent: D120640 (1940-05-01), Graesser et al.
patent: D156571 (1949-12-01), Snow
patent: 1672666 (1928-06-01), Walsh
patent: 2473581 (1949-06-01), Ford
patent: 3638493 (1972-02-01), Schoepflin
Kaniwec George N.
Krehel
The Cooper Thermometer Company
Vales Carmen H,.
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