Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1980-12-16
1983-12-20
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02718596
REFERENCES:
patent: D69246 (1926-01-01), Winn
patent: D92263 (1934-05-01), Montanye
patent: D183921 (1958-11-01), Florian
patent: D254780 (1980-04-01), Mueller
patent: 612518 (1898-10-01), Herbener
patent: 1645211 (1927-10-01), Zeal
patent: 2666329 (1954-01-01), Hiler
patent: 3099162 (1963-07-01), Imperial
patent: 3618558 (1971-11-01), Tepfer
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