Granted Patent
Utility
US 4,490,079 · App. 06/300,531
Method of making a wheel
Inventor:
David Trevarrow
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Sep 9, 1981
Inventor
David Trevarrow
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.