Granted Patent
Utility
US 4,636,692 · App. 06/647,081
Mercury-free discharge lamp
Inventors:
Walter P. Lapatovich, George R. Gibbs
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Sep 4, 1984
Inventors
Walter P. Lapatovich
George R. Gibbs
Assignee (at issue)
GTE Laboratories Incorporated
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.