Granted Patent
Utility
US 5,720,527 · App. 08/553,693
Continuous highwall mining machine with armless conveyor
Inventors:
John J. Sartaine, John A. Baird, Jr., Ian T. Carr, Jon C. Blackstock
Patented Case
View Patent ↗
Granted: Feb 24, 1998
Filed: Nov 20, 1995
Inventors
John J. Sartaine
John A. Baird, Jr.
Ian T. Carr
Jon C. Blackstock
Assignee (at issue)
Mining 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.