Assignee
PRINGLE RONALD E
US3 patents
Top patents by PatentIndex Score
US4986357AJan 22, 1991
Well tool having a variable area hydraulic actuator
PRINGLE RONALD E54 citations95
US8316944B2Nov 27, 2012
System for pulse-injecting fluid into a borehole
PRINGLE RONALD E19 citations79
US7387164B2Jun 17, 2008
Method and apparatus for selective injection or flow control with through-tubing operation capacity
PRINGLE RONALD E5 citations62