Granted Patent
Utility
US 4,634,902 · App. 06/552,518
Circuit arrangement capable of adjusting a threshold level of a differential transistor circuit
Inventors:
Kouichi Tanaka, Takeshi Kuwajima, Kiyoshi Amazawa
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Nov 16, 1983
Inventors
Kouichi Tanaka
Takeshi Kuwajima
Kiyoshi Amazawa
Assignee (at issue)
CLARION 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.