Granted Patent
Utility
US 4,776,600 · App. 07/123,907
Dielectric pipe flange gasket
Inventor:
Gary Allen Kohn
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Nov 23, 1987
Inventor
Gary Allen Kohn
Assignee (at issue)
Pikotek, 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.