Granted Patent
Utility
US 4,897,909 · App. 07/291,551
Method for wheel manufacture by punch forming
Inventor:
Warren J. LaVoy
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Dec 29, 1988
Inventor
Warren J. LaVoy
Assignee (at issue)
Motor Wheel Corporation
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.