Granted Patent
Utility
US 4,579,545 · App. 06/528,694
Flexible coupling using toroidal joint
Inventor:
F. Abbott Chapman
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Sep 1, 1983
Inventor
F. Abbott Chapman
Assignee (at issue)
ALLIED CONSULTING, INC.
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.