Granted Patent
Utility
US 4,893,111 · App. 07/301,446
Heavy duty solid state flasher for turn signal and emergency warning lamps
Inventor:
Philip C. Roller
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Jan 25, 1989
Inventor
Philip C. Roller
Assignee (at issue)
Truck-Lite Co., 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.