DRIVE SYSTEM FOR SURFACE HYDRAULIC ACCUMULATOR
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United States of America Patent
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Issued Date -
Oct 30, 2014
app pub date -
Mar 4, 2014
filing date -
Mar 15, 2013
priority date (Note) -
Abandoned
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Abstract
Pumps are provided, more particularly piston type pumps having increased energy efficiency, systems incorporating such piston type pumps, and methods of operating piston type pumps. The pumps are suitable for pumping of oil from an oil well or for pumping other liquids such as ground water, subterranean liquids, brackish water, sea water, waste water, cooling water, gas, coolants, and the like.
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