Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1976-09-22
1978-08-08
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D1004
Patent
active
D02488370
REFERENCES:
patent: D200632 (1965-03-01), O'Keefe
patent: D220757 (1971-05-01), Smith
patent: D236253 (1975-08-01), Parker
patent: D240024 (1976-05-01), Riley
patent: D242329 (1976-11-01), Van Kersen
patent: D243512 (1977-03-01), Van Kersen
Modern Plastics Encyclopedia, 1948, p. 1513, Extrusion No. 20 at top right.
Office Products, 9/73, p. 20, Thermometers at top.
American Thermometer Co., Inc.
Holtje Nelson C.
Jacox William R.
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