Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density
Patent
1981-03-09
1984-06-12
Ansher, Bernard
Measuring, testing, or signalling instruments
Measuring, regulating or indicating instrument, or casing
Weight, force or density
D23 4, D10 94
Patent
active
D02742276
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"Applied Mud Technology", Brochure of IMCO Services, 1978, at pp. 2-4 thereof.
Ansher Bernard
Beavers Lucian Wayne
Duzan James R.
Halliburton Company
Weaver Thomas R.
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