Granted Patent
Utility
US 5,331,322 · App. 07/998,050
Current cell for digital-to-analog converter
Inventors:
Kwon H. Cha, Oh-Bong Kwon
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Dec 29, 1992
Inventors
Kwon H. Cha
Oh-Bong Kwon
Assignee (at issue)
Hyundai Electronics Industries Co. Ltd.
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.