Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1988-04-04
1991-05-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03171299
REFERENCES:
patent: 2357477 (1944-09-01), Killman
patent: 3658122 (1972-04-01), Kalyk
patent: 3682344 (1922-08-01), Lopez
patent: 4156365 (1979-05-01), Heinmets et al.
Beranek Ernst
Rohrig Peter W.
Davis Antoine D.
Holtje Nelson C.
Mam Babyartikel Gesellschaft m.b.H.
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