Granted Patent
Utility
US 4,685,678 · App. 06/713,482
Position transducer system for a joystick
Inventor:
Jeffrey E. Frederiksen
Patented Case
View Patent ↗
Granted: Aug 11, 1987
Filed: Mar 19, 1985
Inventor
Jeffrey E. Frederiksen
Assignee (at issue)
Bally Manufacturing 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.