Granted Patent
Utility
US 6,523,623 · App. 09/866,814
Method and apparatus for determining drilling paths to directional targets
Inventor:
Frank J. Schuh
Patented Case
View Patent ↗
Granted: Feb 25, 2003
Filed: May 30, 2001
Inventor
Frank J. Schuh
Assignee (at issue)
Validus International Company, LLC
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.