Granted Patent
Utility
US 4,756,648 · App. 07/117,893
Rotatably adjustable boring bar
Inventor:
Robert F. Cusack
Patented Case
View Patent ↗
Granted: Jul 12, 1988
Filed: Nov 2, 1987
Inventor
Robert F. Cusack
Assignee (at issue)
GTE Valeron Corporation
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.