Granted Patent
Utility
US 4,240,863 · App. 06/029,246
Control system for an elastomer extrusion and applicator apparatus
Inventor:
David S. Vinton
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Apr 12, 1979
Inventor
David S. Vinton
Assignee (at issue)
Caterpillar Tractor Co.
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.