Granted Patent
Utility
US 4,790,569 · App. 07/002,072
Reverse taper ring lock coupler and method
Inventor:
Bradley A. Chaffee
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Jan 12, 1987
Inventor
Bradley A. Chaffee
Assignee (at issue)
The Gates Rubber Company
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.