Granted Patent
Utility
US 6,483,237 · App. 10/058,666
High intensity discharge lamp with single crystal sapphire envelope
Inventors:
Bernard J. Eastlund, Maurice Levis
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Jan 28, 2002
Inventors
Bernard J. Eastlund
Maurice Levis
Assignee (at issue)
Gem Lighting, 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.