Granted Patent
Utility
US 6,577,073 · App. 09/865,874
Led lamp
Inventors:
Masanori Shimizu, Yoko Shimomura, Tetsushi Tamura, Hideo Nagai, Nobuyuki Matsui
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: May 25, 2001
Inventors
Masanori Shimizu
Yoko Shimomura
Tetsushi Tamura
Hideo Nagai
Nobuyuki Matsui
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.