Granted Patent
Utility
US 4,853,965 · App. 07/152,742
Flexible joint mechanism
Inventor:
Chester J. Blonski
Patented Case
View Patent ↗
Granted: Aug 1, 1989
Filed: Feb 5, 1988
Inventor
Chester J. Blonski
Assignee (at issue)
The Quaker Oats 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.