Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1991-06-21
1993-06-08
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03362523
REFERENCES:
patent: D317876 (1991-07-01), Huen
patent: 3635086 (1972-01-01), Beruck
patent: 4135549 (1979-01-01), Baker
patent: 4138890 (1979-02-01), Brown
Davis A. D.
Douglas Alan P.
Dubno Herbert
Friedrich Grohe Armaturenfabrik GmbH & Co.
Lianides Ronald
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