Granted Patent
Utility
US 4,786,090 · App. 06/937,683
Peaked-top resilient seal ring and connection therewith
Inventor:
Keith C. Mott
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Dec 4, 1986
Inventor
Keith C. Mott
Assignee (at issue)
Hydril Company
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.