Granted Patent
Utility
US 4,601,343 · App. 06/698,145
PBR with latching system for tubing
Inventors:
Hiram E. Lindsey, Jr., Roger P. Allwin, John M. Yokley
Patented Case
View Patent ↗
Granted: Jul 22, 1986
Filed: Feb 4, 1985
Inventors
Hiram E. Lindsey, Jr.
Roger P. Allwin
John M. Yokley
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.