Granted Patent
Utility
US 6,158,698 · App. 09/458,194
Hollow tie switch assembly
Inventors:
Gary Click, Al Forshaw, Brian M. Charles, Cory O'Brien
Patented Case
View Patent ↗
Granted: Dec 12, 2000
Filed: Dec 9, 1999
Inventors
Gary Click
Al Forshaw
Brian M. Charles
Cory O'Brien
Assignee (at issue)
VAE NORTRAK NORTH AMERICA, 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.