Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1997-07-11
1998-10-20
Davis, Antoine Duval
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D10 56, 1004
Patent
active
D03997677
REFERENCES:
patent: 2497378 (1950-02-01), Talbott
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