Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1981-04-21
1984-10-23
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
Patent
active
D02760282
REFERENCES:
patent: D221001 (1971-06-01), Sylvester
patent: D238562 (1976-01-01), Sylvester
patent: D256566 (1980-08-01), Zephir
patent: D256895 (1980-09-01), LeBlanc
patent: D268172 (1983-03-01), Chirkov
patent: 2397975 (1946-04-01), Obermaier
patent: 3829773 (1974-08-01), Nigg
Crotty Charles A.
Payne George L.
Perrins Allen R.
Davis IV F. Eugene
Holtje Nelson C.
The Superior Electric Company
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