Granted Patent
Utility
US 6,062,514 · App. 09/120,610
Railway switch circuit controller
Inventor:
Kevin McQuistian
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Jul 22, 1998
Inventor
Kevin McQuistian
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.