Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1980-04-17
1982-08-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02657244
REFERENCES:
patent: D236815 (1975-09-01), Van Kersen
patent: D239261 (1976-03-01), Van Kersen
patent: D241920 (1976-10-01), Van Kersen
patent: D244360 (1977-05-01), Van Kersen
patent: D250997 (1979-02-01), Schuberth
patent: D251547 (1979-04-01), McLeod
patent: 3864976 (1975-02-01), Parker
patent: 3951133 (1976-04-01), Reese
Popular Science-1/76-p. 73-Liquid Crystal Thermometers.
Retailing Home Furnishings-1/16/78-Sec. 2-p. 51, Thermometer at top right.
Bio-Temp Products, Inc.
Holtje Nelson C.
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