Granted Patent
Utility
US 4,428,249 · App. 06/327,520
Gear torque sensor apparatus
Inventor:
Keith L. Henk
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Dec 4, 1981
Inventor
Keith L. Henk
Assignee (at issue)
Pako 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.