Granted Patent
Utility
US 4,573,145 · App. 06/504,562
Signal transmitting circuit
Inventor:
Takashi Ozawa
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Jun 15, 1983
Inventor
Takashi Ozawa
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.