Granted Patent
Utility
US 4,852,649 · App. 07/247,084
Packer seal means and method
Inventor:
Carter R. Young
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Sep 20, 1988
Inventor
Carter R. Young
Assignee (at issue)
Otis Engineering Corporation
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.