Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1976-04-28
1978-03-14
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
D1004
Patent
active
D02474808
REFERENCES:
patent: D193481 (1962-08-01), Hose
patent: D196759 (1963-10-01), Blazey
patent: D215562 (1969-10-01), Sato
patent: D218117 (1970-07-01), Sato
patent: D218118 (1970-07-01), Sato
patent: D218934 (1970-10-01), Cordero
Envirotech Corporation
Holtje Nelson C.
Krebs Robert E.
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