Granted Patent
Utility
US 4,415,397 · App. 06/378,978
Apparatus for making toothed belt
Inventor:
Robert E. Wetzel
Patented Case
View Patent ↗
Granted: Nov 15, 1983
Filed: May 17, 1982
Inventor
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.