Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1975-10-08
1978-02-28
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D1004
Patent
active
D02473534
REFERENCES:
patent: D210211 (1968-02-01), Schwartz
patent: D210282 (1968-02-01), Schwartz
patent: D213878 (1969-04-01), Shimasaki
patent: D217771 (1970-06-01), Kuramoto
patent: D219273 (1970-11-01), Shimasaki
patent: D242608 (1976-12-01), Melvin
patent: D242608 (1976-12-01), Melvin
patent: D242609 (1976-12-01), Melvin
patent: 3553574 (1971-01-01), Rice
patent: 3840808 (1974-10-01), Liebermann
Holtje Nelson C.
Kyoritsu Electrical Instruments Works, Ltd.
Oblon Norman F.
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