Granted Patent
Utility
US 4,741,547 · App. 07/049,469
Folding wheelchair
Inventor:
Alan L. Tholkes
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: May 14, 1987
Inventor
Alan L. Tholkes
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.