Granted Patent
Utility
US 4,743,069 · App. 07/039,838
Rotatable cutting bit
Inventor:
Randall W. Ojanen
Patented Case
View Patent ↗
Granted: May 10, 1988
Filed: Apr 17, 1987
Inventor
Randall W. Ojanen
Assignee (at issue)
GTE Products 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.