Granted Patent
Utility
US 4,338,591 · App. 06/272,053
High resolution digital-to-analog converter
Inventor:
Michael G. Tuthill
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Jun 9, 1981
Inventor
Michael G. Tuthill
Assignee (at issue)
Analog Devices, Inc.
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.