Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1979-12-10
1981-11-17
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D13 11, D1004
Patent
active
D02618702
REFERENCES:
patent: D208305 (1967-08-01), Dubin
patent: D214836 (1969-08-01), Gamble
patent: D221957 (1971-09-01), Smyth
patent: D223932 (1972-06-01), Paulson
patent: 3426748 (1969-02-01), Bowers
patent: 3849723 (1974-11-01), Allen
Telephony 11/6/78-p. 14-Instrument at top-center.
Telephony-12/12/77-p. 31-Instrument at top-right.
Holtje Nelson C.
West William D.
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