Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1985-02-28
1987-11-17
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
D 8 1
Patent
active
D02927780
REFERENCES:
patent: D234581 (1975-03-01), Koehler
patent: D247162 (1978-02-01), Vanasco
patent: D250882 (1979-01-01), Johansen
patent: D279274 (1985-06-01), Emori
patent: 3427537 (1969-02-01), Osborne
Industrial Equip. News-6/65-p. 27-Hygrometer at bottom right.
Cilvio Franco
Raffler Dieter
Gardena Kress & Kastner GmbH
Holtje Nelson C.
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