Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1978-01-30
1981-04-14
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02588714
REFERENCES:
patent: D117258 (1939-10-01), Dowden
patent: D120638 (1940-05-01), Ford
patent: 3530718 (1970-09-01), Ehlo
patent: 3903744 (1975-09-01), Cone
Coughlin Patrick R.
Rajotte, Jr. Edward L.
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