Granted Patent
Utility
US 6,484,974 · App. 09/951,141
Controller for switch machine
Inventors:
Raymond C. Franke, Robert P. Bozio, Leonard Wydotis
Patented Case
View Patent ↗
Granted: Nov 26, 2002
Filed: Sep 10, 2001
Inventors
Raymond C. Franke
Robert P. Bozio
Leonard Wydotis
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.