Granted Patent
Utility
US 5,331,311 · App. 07/988,216
Railroad wheel temperature sensor with infrared array
Inventor:
Alan P. Doctor
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Dec 9, 1992
Inventor
Alan P. Doctor
Assignee (at issue)
Servo Corporation of America
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.