Granted Patent
Utility
US 4,391,847 · App. 06/312,614
Coating for halogen lamps
Inventor:
Rollin Brown
Patented Case
View Patent ↗
Granted: Jul 5, 1983
Filed: Oct 19, 1981
Inventor
Rollin Brown
Assignee (at issue)
Edison International 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.