Granted Patent
Utility
US 6,573,850 · App. 10/153,913
Digital-to-analogue converter circuits
Inventor:
John L. Pennock
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: May 24, 2002
Inventor
John L. Pennock
Assignee (at issue)
Wolfson Microelectronics 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.