Granted Patent
Utility
US 5,201,816 · App. 07/962,155
Side angle drilling apparatus
Inventor:
George P. Schivley, Jr.
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Oct 15, 1992
Inventor
George P. Schivley, Jr.
Assignee (at issue)
Ingersoll-Rand 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.