Granted Patent
Utility
US 4,345,648 · App. 06/120,418
Inflatable packer system
Inventor:
Felix Kuus
Patented Case
View Patent ↗
Granted: Aug 24, 1982
Filed: Feb 11, 1980
Inventor
Felix Kuus
Assignee (at issue)
BJ-Hughes 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.