Granted Patent
Utility
US 6,166,839 · App. 08/946,253
Optical transmitting apparatus, optical receiving apparatus, and optical transmitting-receiving system
Inventor:
Takashi Yamaguchi
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Oct 7, 1997
Inventor
Takashi Yamaguchi
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., 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.