Granted Patent
Utility
US 4,765,686 · App. 07/103,787
Rotatable cutting bit for a mining machine
Inventor:
Wayne Adams
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Oct 1, 1987
Inventor
Wayne Adams
Assignee (at issue)
GTE Valenite 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.