Granted Patent
Utility
US 4,244,021 · App. 06/016,734
Ergometric exerciser
Inventor:
Robert E. Chiles, III
Patented Case
View Patent ↗
Granted: Jan 6, 1981
Filed: Mar 2, 1979
Inventor
Robert E. Chiles, III
Assignee (at issue)
AMF GmbH
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.