Granted Patent
Utility
US 4,753,486 · App. 07/009,278
Mining machine with roof bolting apparatus
Inventor:
Maurice K. LeBegue
Patented Case
View Patent ↗
Granted: Jun 28, 1988
Filed: Jan 30, 1987
Inventor
Maurice K. LeBegue
Assignee (at issue)
Baker International 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.