Granted Patent
Utility
US 5,220,212 · App. 07/775,796
Single level bipolar ECL flip flop
Inventor:
Nguyen X. Sinh
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Oct 10, 1991
Inventor
Nguyen X. Sinh
Assignee (at issue)
NATIONAL SEMICONDUCTOR 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.