Granted Patent
Utility
US 5,270,608 · App. 07/786,194
Metal halide arc discharge lamp assembly
Inventors:
Glen P. Williamson, Thang T. Tay
Patented Case
View Patent ↗
Granted: Dec 14, 1993
Filed: Oct 31, 1991
Inventors
Glen P. Williamson
Thang T. Tay
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.