Granted Patent
Utility
US 4,733,167 · App. 06/829,363
Measurement circuit for digital to analog converter
Inventor:
Toshio Tamamura
Patented Case
View Patent ↗
Granted: Mar 22, 1988
Filed: Feb 13, 1986
Inventor
Toshio Tamamura
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.