Granted Patent
Utility
US 5,969,656 · App. 08/908,057
Digital-to-analog converter for increasing number of bits converted
Inventor:
Osamu Itoku
Patented Case
View Patent ↗
Granted: Oct 19, 1999
Filed: Aug 11, 1997
Inventor
Osamu Itoku
Assignee (at issue)
NEC 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.