Patents Assigned to Extend Incorporated
  • Door knob adapter
    Patent number: D268984
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: May 17, 1983
    Assignee: Extend Incorporated
    Inventor: Rodney F. Bergen
  • Lever doorknob adaptor
    Patent number: D369086
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: April 23, 1996
    Assignee: Extend Incorporated
    Inventor: Rodney F. Bergen