Granted Patent
Utility
US 4,403,979 · App. 06/268,426
Pulley for positive drive systems
Inventor:
Frank L. Wujick
Patented Case
View Patent ↗
Granted: Sep 13, 1983
Filed: May 29, 1981
Inventor
Frank L. Wujick
Assignee (at issue)
Uniroyal Ltd.
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.