Granted Patent
Utility
US 4,287,949 · App. 06/109,979
Setting tools and liner hanger assembly
Inventor:
Hiram E. Lindsey, Jr.
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Jan 7, 1980
Inventor
Hiram E. Lindsey, Jr.
Assignee (at issue)
MWL Tool & Supply Company
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.