Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1991-03-28
1993-07-20
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03375340
REFERENCES:
patent: D317414 (1991-06-01), Lanci et al.
patent: 4191197 (1980-03-01), Benzinger
patent: 4895164 (1990-01-01), Wood
Davis A. D.
Douglas Alan P.
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