Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Radiation – e.g. – geiger counter
Patent
1982-02-25
1984-07-10
Holtje, Nelson C.
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Radiation, e.g., geiger counter
Patent
active
D02746077
REFERENCES:
patent: D218705 (1970-09-01), Doss
patent: D248627 (1978-07-01), Tyndall
patent: 3632279 (1971-12-01), Walden
patent: 3662255 (1972-05-01), Garrett
patent: 3823365 (1974-07-01), Anderson
patent: 4263553 (1981-04-01), Cook
Electronics Today International-3/80-pp. 78-83-metal detector.
Fisher M-Scope VLF 553 D. Detector Operator's Manual-9/77-p. 1-detector.
Schaefer Edgar H.
Wend William J.
Holtje Nelson C.
Teknetics, Inc.
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