Granted Patent
Utility
US 4,650,831 · App. 06/674,188
Tires
Inventor:
Robert Bond
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Nov 23, 1984
Inventor
Robert Bond
Assignee (at issue)
Shell Internationale Research Maatschappij B.V.
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.