Granted Patent
Utility
US 4,666,193 · App. 06/627,780
Pipe coupling
Inventor:
Wayne B. Hockett
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Jul 5, 1984
Inventor
Wayne B. Hockett
Assignee (at issue)
Hockett Systems, Inc.
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.