Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1989-04-27
1991-05-14
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03168239
REFERENCES:
patent: D246031 (1977-10-01), Kroon et al.
patent: D255335 (1980-06-01), Joslin et al.
patent: 3855863 (1974-12-01), Kuehn et al.
patent: 4496931 (1985-06-01), Watanabe et al.
patent: 4497701 (1985-02-01), Murata et al.
patent: 4520341 (1985-05-01), Miyoshi et al.
Data Precision, Temperature Meter Model 940, 2/1980, page cover.
Cole-Palmer, Thermohygrometer and RH/Temperature Meter, .COPYRGT.1987, p. 323.
Transcat, Test & Measurement Instruments, .COPYRGT.1987, pp. 356, 357, 354, 355.
Davis Antoine D.
Holtje Nelson C.
Protimeter plc
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