Granted Patent
Utility
US 6,433,719 · App. 09/818,542
Digital-analogue transformer using resistor string
Inventor:
Eui Shik YOON
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Mar 28, 2001
Inventor
Eui Shik YOON
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.