Granted Patent
Utility
US 4,942,822 · App. 07/203,328
Method and apparatus for automatically setting rail tie plates
Inventor:
Dennis J. Cotic
Patented Case
View Patent ↗
Granted: Jul 24, 1990
Filed: Jun 7, 1988
Inventor
Dennis J. Cotic
Assignee (at issue)
Oak Industries 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.