Granted Patent
Utility
US 4,903,810 · App. 06/534,820
Clutch shoe construction and method of making same
Inventors:
George W. Stock, David L. Heldt
Patented Case
View Patent ↗
Granted: Feb 27, 1990
Filed: Sep 22, 1983
Inventors
George W. Stock
David L. Heldt
Assignee (at issue)
Dyneer 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.