Fluid flow meter for mixed liquid and gas
 A fluid flow meter for a fluid containing mixed liquid and gas. It has positive displacement structure that incorporates density measurement of segments of the mixed liquid and gas, while the linear velocity of both components is the same. There may be means for measuring the pressure and temperature of the fluid segments in order to determine the volume of the gas component. 
Texaco Inc.
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inventional inventional inventional
Robert W. Dan M.
Pitts, Jr. Arnold