Granted Patent
Utility
US 4,677,320 · App. 06/729,552
Emitter coupled logic to transistor transistor logic translator
Inventor:
Geoff Hannington
Patented Case
View Patent ↗
Granted: Jun 30, 1987
Filed: May 2, 1985
Inventor
Geoff Hannington
Assignee (at issue)
FAIRCHILD 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.