Granted Patent
Utility
US 4,231,826 · App. 05/972,291
Process for forming V-belts and belt sleeves
Inventors:
Richard E. Wrast, William J. Gardiner, Francis A. Shedd
Patented Case
View Patent ↗
Granted: Nov 4, 1980
Filed: Dec 22, 1978
Inventors
Richard E. Wrast
William J. Gardiner
Francis A. Shedd
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.