Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1979-05-14
1982-08-17
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02658003
REFERENCES:
patent: 3406971 (1968-10-01), Koff
patent: 3914890 (1975-10-01), Behlen
patent: 4072055 (1978-02-01), Elliott
Butera Charles
Butera Ingela
Holtje Nelson C.
Holz Arthur F.
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