Granted Patent
Utility
US 4,283,886 · App. 06/080,927
Workpiece conditioning grinder system
Inventor:
Robert F. Obear
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Oct 1, 1979
Inventor
Robert F. Obear
Assignee (at issue)
Western Gear 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.