Granted Patent
Utility
US 5,434,845 · App. 08/197,464
Infrequent event trace
Inventor:
Philip N. Miller
Patented Case
View Patent ↗
Granted: Jul 18, 1995
Filed: Feb 16, 1994
Inventor
Philip N. Miller
Assignee (at issue)
Federal Signal 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.