Granted Patent
Utility
US 4,583,515 · App. 06/705,411
Abrasive cutting wheel for cutting rock-like material
Inventor:
Paul B. Ballenger
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Feb 25, 1985
Inventor
Paul B. Ballenger
Assignee (at issue)
Federal-Mogul 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.