Granted Patent
Utility
US 4,448,621 · App. 06/034,698
Long synchronous belt and method for making the same
Inventors:
Richard L. Marsh, Robert E. Wetzel
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Apr 30, 1979
Inventors
Richard L. Marsh
Robert E. Wetzel
Assignee (at issue)
DayCo Holdings, LP
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.