Granted Patent
Utility
US 6,623,145 · App. 09/924,474
Light source device
Inventor:
Takeshi Ishihara
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Aug 9, 2001
Inventor
Takeshi Ishihara
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.