Granted Patent
Utility
US 6,513,949 · App. 09/453,420
LED/phosphor-LED hybrid lighting systems
Inventors:
Thomas Marshall, Michael D. Pashley, Stephen Herman
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Dec 2, 1999
Inventors
Thomas Marshall
Michael D. Pashley
Stephen Herman
Assignee (at issue)
KONINKLIJKE PHILIPS ELECTRONICS NV
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.