Granted Patent
Utility
US 5,880,869 · App. 08/612,417
Optical transmitter
Inventor:
Isamu Takano
Patented Case
View Patent ↗
Granted: Mar 9, 1999
Filed: Mar 7, 1996
Inventor
Isamu Takano
Assignee (at issue)
NEC CORPORATION
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.