Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1987-09-25
1990-11-27
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
Patent
active
D03124207
REFERENCES:
patent: D213878 (1969-04-01), Shimasaki
patent: D242609 (1976-12-01), Melvin
patent: D251060 (1979-02-01), Kuramoto
patent: D261627 (1981-11-01), Kuramoto
patent: D264057 (1982-04-01), Kuramoto
patent: D264448 (1982-05-01), Kuramoto
patent: D271948 (1983-12-01), Kuramoto
patent: 4283677 (1981-08-01), Niwa
patent: 4825154 (1989-04-01), Cross et al.
Hioki, 3107 Clamp on Leak Hi Tester, 11/1983, p. 8.
Ex Tech, Husky DMM Clamp Meter, 1986, p. 16.
Davis Antoine D.
Holtje Nelson C.
Kyoritsu Electrical Instruments Works, Ltd.
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