Granted Patent
Utility
US 5,142,241 · App. 07/744,087
Differential input circuit
Inventors:
Ryuichiro Yamamoto, Hiromi Saito, Tomonori Morita
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Aug 12, 1991
Inventors
Ryuichiro Yamamoto
Hiromi Saito
Tomonori Morita
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.