Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Regulator or control
Patent
1978-08-25
1981-07-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Regulator or control
D1004
Patent
active
D02600048
REFERENCES:
patent: D198685 (1964-07-01), Kerr
patent: D208944 (1967-10-01), Miller
A.P.I. Instruments Co. Cat., "Bulletin 49-B," 3/1967, Temperature controllers at right.
Modern Plastics, Aug. 1970, pp. 47 and 72, Temp. controllers at top.
Design News, 10/64, p. 85, Temp. controller at bottom right.
Ishikawa Minoru
Nagao Toshiaki
Nagata Kunio
Ohhasi Yasuo
Holtje Nelson C.
Omron Tateisi Electronics Co.
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