Granted Patent
Utility
US 4,691,639 · App. 06/826,008
Rail tie plate placing vehicle and method
Inventor:
John D. Holley
Patented Case
View Patent ↗
Granted: Sep 8, 1987
Filed: Feb 4, 1986
Inventor
John D. Holley
Assignee (at issue)
Holley Engineering Company, 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.