Granted Patent
Utility
US 5,009,014 · App. 07/307,847
Railroad rail profile measuring system
Inventor:
David Leach
Patented Case
View Patent ↗
Granted: Apr 23, 1991
Filed: Feb 7, 1989
Inventor
David Leach
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.