Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Radiation – e.g. – geiger counter
Patent
1989-03-02
1991-07-09
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Radiation, e.g., geiger counter
Patent
active
D03180220
REFERENCES:
patent: D259865 (1981-07-01), Struby
patent: D269858 (1983-07-01), Alter
patent: 4518860 (1985-05-01), Alter et al.
patent: 4814608 (1989-03-01), Dempsey et al.
patent: 4853536 (1989-08-01), Dempsey et al.
patent: 4948970 (1990-08-01), Port et al.
patent: 4980550 (1990-12-01), Port et al.
Davis Antoine D.
Holtje Nelson C.
Rad Elec Inc.
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