Granted Patent
Utility
US 4,647,798 · App. 06/723,016
Negative input voltage CMOS circuit
Inventors:
Harold S. Crafts, Patrick L. Ham
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Apr 15, 1985
Inventors
Harold S. Crafts
Patrick L. Ham
Assignee (at issue)
NCR 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.