Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1976-07-16
1978-03-21
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02475529
REFERENCES:
patent: D91605 (1934-02-01), Conner
patent: 2812604 (1957-11-01), Nelson
patent: 3548308 (1970-12-01), Seabury
patent: 3895523 (1975-07-01), Nollen
patent: 3951133 (1976-04-01), Reece
patent: 3968690 (1976-07-01), Blouin
Office Products -9/73-p. 20-Model 311 Thermometer.
Holtje Nelson C.
Van Poole Thomas B.
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