Granted Patent
Utility
US 6,696,798 · App. 10/362,689
Ballast circuit for operating a discharge lamp
Inventors:
Kazuhiro Nishimoto, Katsunobu Hamamoto, Hiromitsu Mizukawa
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Mar 5, 2003
Inventors
Kazuhiro Nishimoto
Katsunobu Hamamoto
Hiromitsu Mizukawa
Assignee (at issue)
Matsushita Electric Works, 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.