Granted Patent
Utility
US 5,011,139 · App. 07/491,000
Assisted dip/chin exercise device
Inventor:
Carl K. Towley, III
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Mar 9, 1990
Inventor
Carl K. Towley, III
Assignee (at issue)
Lumex, 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.