Pressurized density measuring apparatus

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Weight – force or density

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D10 90, D1004

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active

D02688204

REFERENCES:
patent: D81832 (1930-08-01), Flanagan
patent: D98977 (1936-03-01), Bennett
patent: D186243 (1959-09-01), Moore
patent: D262693 (1982-01-01), Cain
patent: 2132736 (1938-10-01), Jones
patent: 3057421 (1962-10-01), Fann
patent: 3747415 (1973-07-01), Nickles
Halliburton Tech. Data Sheet #SP-11053-Tru-Wate Cup, 6/72.
American Petroleum Institute Bulletin RP13B-Standard Procedure for Testing Drilling Fluids-FIG. 1.1-and balance-4/78, pp. 3-4.

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