Granted Patent
Utility
US 4,195,699 · App. 05/920,296
Drilling optimization searching and control method
Inventors:
Charles D. Rogers, Joseph A. Fowler
Patented Case
View Patent ↗
Granted: Apr 1, 1980
Filed: Jun 29, 1978
Inventors
Charles D. Rogers
Joseph A. Fowler
Assignee (at issue)
United States Steel 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.