Granted Patent
Utility
US 4,329,780 · App. 06/164,667
Method of making a reinforced wear-resistant liner
Inventor:
M. John Somers
Patented Case
View Patent ↗
Granted: May 18, 1982
Filed: Jun 30, 1980
Inventor
M. John Somers
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.