Granted Patent
Utility
US 4,591,296 · App. 06/535,306
Temporary guide base retrieval method and apparatus
Inventors:
Herman O. Henderson, Jr., Richard Coombs
Patented Case
View Patent ↗
Granted: May 27, 1986
Filed: Sep 23, 1983
Inventors
Herman O. Henderson, Jr.
Richard Coombs
Assignee (at issue)
SMITH INTERNATIONAL, INC.
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.