Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Temperature – humidity – atmospheric condition
Patent
1986-04-08
1989-05-02
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Temperature, humidity, atmospheric condition
Patent
active
D03009076
REFERENCES:
patent: D249475 (1978-09-01), Turner
patent: D264190 (1982-05-01), Muller
patent: D292494 (1987-10-01), King
patent: 3530718 (1970-09-01), Ehlo
patent: 4206649 (1980-06-01), Nagaie
patent: 4416553 (1983-11-01), Huebscher
patent: 4428685 (1984-01-01), Lemelson
patent: 4602642 (1986-07-01), O'Hara
Cole-Parmer Cat., .COPYRGT."1984 Presents"-Super Flexatherm Thermometer on p. 6.
Design News-5/12/65-p. 48-Electronic hygrometer.
Holtje Nelson C.
Svenska Matapparater F.A.B.
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