Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1987-08-03
1990-06-05
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03083438
REFERENCES:
patent: D300008 (1989-02-01), Zalman
patent: 2235252 (1938-12-01), Bradley
patent: 3952692 (1976-04-01), Griggs
patent: 4445789 (1984-05-01), Peart et al.
Extech Instruments Corporation, 17th Annual Catalog-1989, 4/5/89, p. 15.
Aloise Arthur C.
Tichy Edward
Cooper Instrument Corporation
Davis Antoine D.
Holtje Nelson C.
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