Granted Patent
Utility
US 4,391,120 · App. 06/019,683
Radial deformation means for cylindrical objects such as wheels
Inventor:
David Trevarrow
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Mar 12, 1979
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.