Granted Patent
Utility
US 4,652,000 · App. 06/887,475
Sealing system for high pressure gas applications
Inventor:
Glenn R. O'Rourke
Patented Case
View Patent ↗
Granted: Mar 24, 1987
Filed: Jul 21, 1986
Inventor
Glenn R. O'Rourke
Assignee (at issue)
EXCELLO CO., LTD.
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.