Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1981-03-09
1983-09-27
Ansher, Bernard
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
D10 83, D15 7, D1004
Patent
active
D02707187
REFERENCES:
patent: D180685 (1957-07-01), Edelmann
patent: D223122 (1972-03-01), King et al.
patent: D231389 (1974-04-01), Milani
patent: D263568 (1982-03-01), Sadler
patent: D264444 (1982-05-01), Muchenberger et al.
patent: 4240286 (1980-12-01), Bentz
patent: 4299118 (1981-11-01), Gau et al.
Ansher Bernard
Beavers Lucian Wayne
Duzan James R.
Halliburton Company
Weaver Thomas R.
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