Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1992-04-09
1994-02-22
Douglas, Alan P.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03444635
REFERENCES:
patent: D258640 (1981-03-01), Hefling
patent: 4204271 (1980-05-01), Braly
patent: 8665744 (1987-05-01), Smith
Davis Antoine D.
Douglas Alan P.
Invicta Plastics Ltd.
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