Granted Patent
Utility
US 4,680,465 · App. 06/603,001
Multi-axis force controller
Inventor:
Curtis E. Stevens
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Apr 23, 1984
Inventor
Curtis E. Stevens
Assignee (at issue)
Parker-Hannifin 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.