Granted Patent
Utility
US 5,765,836 · App. 08/895,018
Sealing system
Inventors:
Edward O. Banker, Erich F. Klementich
Patented Case
View Patent ↗
Granted: Jun 16, 1998
Filed: Jul 16, 1997
Inventors
Edward O. Banker
Erich F. Klementich
Assignee (at issue)
Marubeni Tubulars, 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.