Granted Patent
Utility
US 6,487,781 · App. 09/825,095
Bore path alignment system
Inventor:
Clifford C. Johnson
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Apr 2, 2001
Inventor
Clifford C. Johnson
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.