Granted Patent
Utility
US 4,600,064 · App. 06/705,158
Earth boring bit with bearing sleeve
Inventors:
Stanley R. Scales, Duane Shotwell, Gerald O. Atkinson
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: Feb 25, 1985
Inventors
Stanley R. Scales
Duane Shotwell
Gerald O. Atkinson
Assignee (at issue)
Hughes Tool 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.