Granted Patent
Utility
US 5,283,022 · App. 07/794,293
Restrictor for tire mold vent passage and method of use
Inventor:
Donald R. Bartley
Patented Case
View Patent ↗
Granted: Feb 1, 1994
Filed: Nov 6, 1991
Inventor
Donald R. Bartley
Assignee (at issue)
The Uniroyal Goodrich Tire 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.