Granted Patent
Utility
US 5,011,229 · App. 07/475,063
Miner cutting bit holding apparatus
Inventors:
Michael L. O'Neill, Stephen P. Moore, Eugene F. Pendolino
Patented Case
View Patent ↗
Granted: Apr 30, 1991
Filed: Feb 5, 1990
Inventors
Michael L. O'Neill
Stephen P. Moore
Eugene F. Pendolino
Assignee (at issue)
Joy Technologies Inc.
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.