Granted Patent
Utility
US 6,608,440 · App. 09/897,987
High pressure discharge lamp and method of production therefor
Inventors:
Kazuhisa Nishida, Toshimoto Makino
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Jul 5, 2001
Inventors
Kazuhisa Nishida
Toshimoto Makino
Assignee (at issue)
NEC Microwave Tube, Ltd.
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.