Granted Patent
Utility
US 4,514,934 · App. 06/394,731
Method and apparatus for abrasively machining a workpiece
Inventors:
Robert Ray, Rex G. Pierce
Patented Case
View Patent ↗
Granted: May 7, 1985
Filed: May 10, 1982
Inventors
Robert Ray
Rex G. Pierce
Assignee (at issue)
Caterpillar Tractor Co.
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.