Granted Patent
Utility
US 5,250,856 · App. 07/863,551
Differential input buffer-inverters and gates
Inventors:
Edward A. Burton, Thomas D. Fletcher
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Jul 1, 1991
Inventors
Edward A. Burton
Thomas D. Fletcher
Assignee (at issue)
North American Philips 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.