Granted Patent
Utility
US 6,217,126 · App. 09/224,540
Railway emulation brake
Inventor:
Robert C. Kull
Patented Case
View Patent ↗
Granted: Apr 17, 2001
Filed: Dec 31, 1998
Inventor
Robert C. Kull
Assignee (at issue)
Westinghouse Air Brake Technologies Corporation
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.