Granted Patent
Utility
US 5,403,261 · App. 08/058,160
Illumination equipment
Inventors:
Masanori Shimizu, Syouetu Sakamoto
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: May 5, 1993
Inventors
Masanori Shimizu
Syouetu Sakamoto
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.