Granted Patent
Utility
US 5,846,034 · App. 08/672,270
Automated drill stem guide and method
Inventors:
Samuel A. Martin, Leslie P. Antalffy, Michael B. Knowles, William R. Sines
Patented Case
View Patent ↗
Granted: Dec 8, 1998
Filed: Jun 26, 1996
Inventors
Samuel A. Martin
Leslie P. Antalffy
Michael B. Knowles
William R. Sines
Assignee (at issue)
Fluor 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.