Granted Patent
Utility
US 4,422,508 · App. 06/296,633
Methods for pulling sucker rod strings
Inventors:
Woodrow T. Rutledge, Jr., Russel P. Rutledge, John E. Freeman
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Aug 27, 1981
Inventors
Woodrow T. Rutledge, Jr.
Russel P. Rutledge
John E. Freeman
Assignee (at issue)
Fiberflex Products Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.