Granted Patent
Utility
US 6,172,464 · App. 08/394,251
Compact screw-in fluorescent lamp
Inventor:
Ole K. Nilssen
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Feb 24, 1995
Inventor
Ole K. Nilssen
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.