Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Volume – flow or rate
Patent
1986-09-30
1990-06-12
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Volume, flow or rate
116264
Patent
active
D03084914
REFERENCES:
patent: D189692 (1961-01-01), Curtis
patent: D234684 (1975-04-01), Olson
patent: D255666 (1980-07-01), Buchanan
Holtje Nelson C.
Litchfield Stephen A.
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