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Individual
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Individual
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Priority to ES222538ApriorityCriticalpatent/ES222538A1/en
Publication of ES222538A1publicationCriticalpatent/ES222538A1/en
Pump with pistons free piston, which essentially is characterized by comprising a flat cylindrical body, closed, traversed by an axis which is solid solid disk, circular and concentric to the general line of the pump, but not to the inner wall of the pump body, which is concentric with respect to the geometrical axis thereof, which creates the existence of a peripheral space or sector that is the functional volume of the pump. (Machine-translation by Google Translate, not legally binding)
ES222538A1955-06-211955-06-21A pump with free piston stems (Machine-translation by Google Translate, not legally binding)
ExpiredES222538A1
(en)