Granted Patent
Utility
US 6,262,573 · App. 09/397,839
Electromagnetic system for railroad track crack detection and traction enhancement
Inventors:
Robert J. Wojnarowski, Kenneth Brakeley Welles, II, William P. Kornrumpf
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Sep 17, 1999
Inventors
Robert J. Wojnarowski
Kenneth Brakeley Welles, II
William P. Kornrumpf
Assignee (at issue)
General Electric Company
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.