Granted Patent
Utility
US 5,642,797 · App. 08/597,433
Molded plastic rotor assembly for electromagnetic friction clutch
Inventor:
John H. Wall
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Feb 8, 1996
Inventor
John H. Wall
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.