Granted Patent
Utility
US 6,150,673 · App. 09/295,496
Light emitting diode unit for distance measuring system
Inventor:
Isami Hirai
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Apr 21, 1999
Inventor
Isami Hirai
Assignee (at issue)
Asahi Kogaku Kogyo Kabushiki Kaisha
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.