Granted Patent
Utility
US 4,632,434 · App. 06/752,602
Coupling means for tubular members
Inventors:
Robert H. Proctor, Ronald C. Hardesty
Patented Case
View Patent ↗
Granted: Dec 30, 1986
Filed: Jul 8, 1985
Inventors
Robert H. Proctor
Ronald C. Hardesty
Assignee (at issue)
Murray Corporation
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.