Patents Represented by Attorney, Agent or Law Firm Tim W. Cusington
  • Hydraulic actuator
    Patent number: 6502640
    Abstract: The present invention provides a hydraulic actuator adapted for use in downhole well applications that enables control of several hydraulic devices from a single control line.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: January 7, 2003
    Assignee: Schlumberger Technology Corporation
    Inventors: Christophe M. Rayssiguier, Vong Vongphakdy