Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1979-05-11
1980-12-30
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
D10103, D10 97, D1004
Patent
active
D02577194
REFERENCES:
patent: D202572 (1965-10-01), Huntsman
patent: 3434659 (1969-03-01), Ham
Holtje Nelson C.
Siemens Corporation
Spellman Martin J.
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