Granted Patent
Utility
US 4,689,497 · App. 06/740,766
Master-slave type flip-flop circuits
Inventors:
Yoshitaka Umeki, Kazuyoshi Yamada
Patented Case
View Patent ↗
Granted: Aug 25, 1987
Filed: Jun 3, 1985
Inventors
Yoshitaka Umeki
Kazuyoshi Yamada
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.