Granted Patent
Utility
US 4,550,708 · App. 06/510,439
Abrasive cutting wheel for cutting rock-like material
Inventors:
Carl F. Roemmele, Joseph D. Ekland
Patented Case
View Patent ↗
Granted: Nov 5, 1985
Filed: Jul 6, 1983
Inventors
Carl F. Roemmele
Joseph D. Ekland
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.