Combined thermometer-hygrometer gauge unit

Details Combined thermometer-hygrometer gauge unit Combined thermometer-hygrometer gauge unit

1984-09-25

1987-03-03

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Temperature, humidity, atmospheric condition

D10 52, D10102

Patent

active

D02885360

REFERENCES:
patent: D116698 (1939-09-01), Ruopp
patent: D195783 (1963-07-01), Woods
patent: D201990 (1965-08-01), Aldridge
patent: D223404 (1972-04-01), Schwartz
patent: D251482 (1979-04-01), Sugiyama
patent: D255431 (1980-06-01), Marmorale
patent: D274505 (1984-07-01), Westberg
patent: D279869 (1985-07-01), Tanaka

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