Granted Patent
Utility
US 5,342,233 · App. 07/939,339
Methods for removing contaminants from arc discharge lamps
Inventor:
Philip B. Newell
Patented Case
View Patent ↗
Granted: Aug 30, 1994
Filed: Sep 3, 1992
Inventor
Philip B. Newell
Assignee (at issue)
OSRAM SYLVANIA Inc.
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.