Granted Patent
Utility
US 4,072,309 · App. 05/698,463
Multi-purpose exercise device
Inventor:
Jerry L. Wilson
Patented Case
View Patent ↗
Granted: Feb 7, 1978
Filed: Jun 21, 1976
Inventor
Jerry L. Wilson
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.