Granted Patent
Utility
US 4,366,609 · App. 06/226,350
Composite pulley and method for making
Inventor:
Billy L. Speer
Patented Case
View Patent ↗
Granted: Jan 4, 1983
Filed: Jan 19, 1981
Inventor
Billy L. Speer
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.