Granted Patent
Utility
US 6,296,208 · App. 09/382,439
Railway switch machine point detection system
Inventor:
Raymond C. Franke
Patented Case
View Patent ↗
Granted: Oct 2, 2001
Filed: Aug 25, 1999
Inventor
Raymond C. Franke
Assignee (at issue)
Union Switch & Signal, 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.