Combined thermometer and hygrometer or the like

Details Combined thermometer and hygrometer or the like Combined thermometer and hygrometer or the like

1976-08-26

1978-09-12

Holtje, Nelson C.

Measuring, testing, or signalling instruments

Measuring, regulating or indicating instrument, or casing

Temperature, humidity, atmospheric condition

D1004

Patent

active

D02493357

REFERENCES:
patent: D123194 (1940-10-01), Ziebolz
patent: D197441 (1964-02-01), Solecki
patent: 791785 (1905-06-01), Hertzberg
patent: 3214975 (1965-11-01), Solecki
patent: 3681992 (1972-08-01), Cofoid

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