Granted Patent
Utility
US 4,330,141 · App. 06/126,689
Adjustable pipe union
Inventor:
Gary Allen Kohn
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Mar 3, 1980
Inventor
Gary Allen Kohn
Assignee (at issue)
Otis Engineering 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.