Granted Patent
Utility
US 5,964,507 · App. 08/954,602
Transmission gearcase for multiple cutting heads
Inventors:
Jon C. Blackstock, John A. Baird, Jr., Ian T. Carr
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Oct 20, 1997
Inventors
Jon C. Blackstock
John A. Baird, Jr.
Ian T. Carr
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.