Granted Patent
Utility
US 4,838,843 · App. 06/368,946
Toothed belt
Inventor:
William L. Westhoff
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: Apr 16, 1982
Inventor
William L. Westhoff
Assignee (at issue)
The Gates Rubber Company
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.