Granted Patent
Utility
US 4,787,176 · App. 06/822,198
Drill bit sharpening apparatus
Inventor:
Robert L. Fuller, Jr.
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Jan 24, 1986
Inventor
Robert L. Fuller, Jr.
Assignee (at issue)
The Boeing 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.