Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1987-01-30
1992-11-03
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03306801
REFERENCES:
patent: D136108 (1943-08-01), Casey
patent: D192152 (1962-01-01), Shimano
patent: 1351971 (1920-09-01), Steigerwald
Davis Antoine D.
Holtje Nelson C.
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