Pumps
Expansible chamber type
Relatively movable serial distributors
Inventor
active
Ball and seat valve assembly and downhole pump utilizing the val
Downhole pump with standing valve assembly which guides the ball
Pump barrel seal assembly including seal/actuator element
Pump barrel valve assembly including seal/actuator element
Rotating piston for ball and seat valve assembly and downhole pu
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Profile ID: LFUS-PAI-P-400342