Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1980-01-10
1981-11-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02617374
REFERENCES:
patent: D236815 (1975-09-01), Van Kersen
patent: D239261 (1976-03-01), Van Kersen
patent: D240607 (1976-07-01), Riley
patent: D241920 (1976-10-01), Van Kersen
patent: D243512 (1977-03-01), Van Kersen
patent: D251547 (1979-04-01), McLeod
patent: 4070912 (1978-01-01), McNaughtan
American Thermometer Co., Inc.
Holtje Nelson C.
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