Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1975-05-23
1979-03-13
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
D1004
Patent
active
D02512882
REFERENCES:
patent: D132548 (1942-05-01), Jeffrey
patent: D199692 (1964-12-01), Stolarz
patent: 3006546 (1961-10-01), Lapointe
patent: 3706876 (1972-12-01), Langieri
Industrial Equip. News - 5/65 p. 97-Counter at top left.
Farkas Robert D.
Holtje Nelson C.
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