Granted Patent
Utility
US 4,749,073 · App. 07/048,672
Soft-start electromagnetic coupling
Inventor:
Robert A. Olsen
Patented Case
View Patent ↗
Granted: Jun 7, 1988
Filed: May 11, 1987
Inventor
Robert A. Olsen
Assignee (at issue)
DANA LIMITED
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.