Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Patent
1980-05-12
1982-06-22
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Electrical property
D1004
Patent
active
D02650657
REFERENCES:
patent: D227802 (1973-07-01), Helgesson
patent: D237982 (1975-12-01), Hoogesteger
patent: D240409 (1976-07-01), Roberts
patent: D248419 (1978-07-01), Beitler
patent: D248595 (1978-07-01), Beitler
patent: D249388 (1978-09-01), Sulek
patent: D249479 (1978-09-01), Rasmussen
patent: D250934 (1979-01-01), Fannin
patent: D252948 (1979-09-01), Ferreira
patent: B534334 (1976-03-01), Bell
patent: 4079459 (1978-03-01), Grant
Industrial Equipment News-1/78-p. S-17-Digital Multimeter at right.
Holtje Nelson C.
Powers Medical Systems, Inc.
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