Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1980-02-29
1982-05-18
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D1004
Patent
active
D02644487
REFERENCES:
patent: D160179 (1950-09-01), Koch
patent: D177674 (1956-05-01), Huber
patent: D209398 (1967-11-01), Kuramoto
patent: D213878 (1969-04-01), Shimasaki
patent: D242608 (1976-12-01), Melvin
patent: D242609 (1976-12-01), Melvin
patent: 4071824 (1978-01-01), Kernander
Industrial Equip. News--11/78--p. S-9--clamp-on multimeter at center.
Holtje Nelson C.
Kelman Kurt
Kyoritsu Electrical Instruments Works, Ltd.
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