Granted Patent
Utility
US 3,987,684 · App. 05/599,916
Endless power transmission belt structure
Inventors:
David G. Fisher, Billy L. Speer
Patented Case
View Patent ↗
Granted: Oct 26, 1976
Filed: Jul 28, 1975
Inventors
David G. Fisher
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.