Granted Patent
Utility
US 4,611,813 · App. 06/655,871
Method of and apparatus for providing an annular seal
Inventor:
Hector N. Guerrero
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Sep 28, 1984
Inventor
Hector N. Guerrero
Assignee (at issue)
Combustion Engineering, 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.