Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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CAMCO
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CAMCO
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Application filed by CAMCOfiledCriticalCAMCO
Priority to FR830251ApriorityCriticalpatent/FR1259905A/fr
Application grantedgrantedCritical
Publication of FR1259905ApublicationCriticalpatent/FR1259905A/fr
F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
F04B47/12—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having free plunger lifting the fluid to the surface
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
General Engineering & Computer Science
(AREA)
FR830251A1960-06-171960-06-17Plongeur pour les puits, en particulier pour les puits de pétrole
ExpiredFR1259905A
(fr)