Granted Patent
Utility
US 6,509,840 · App. 09/756,670
Sun phantom led traffic signal
Inventor:
Patrick Martineau
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jan 10, 2001
Inventor
Patrick Martineau
Assignee (at issue)
GELcore LLC
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.