Granted Patent
Utility
US 5,605,099 · App. 08/361,571
Maintenance vehicle and method for measuring and maintaining the level of a railroad track
Inventors:
Dennis A. Sroka, William E. Perry, Bruce W. Bradshaw, David Mathew Johnson
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Dec 22, 1994
Inventors
Dennis A. Sroka
William E. Perry
Bruce W. Bradshaw
David Mathew Johnson
Assignee (at issue)
Pandrol Jackson, 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.