Granted Patent
Utility
US 5,220,959 · App. 07/764,653
Gripping inflatable packer
Inventor:
James C. Vance, Sr.
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Sep 24, 1991
Inventor
James C. Vance, Sr.
Assignee (at issue)
The Gates Rubber 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.