Granted Patent
Utility
US 4,410,880 · App. 06/247,448
Digital-to-analog converter and analog-to-digital converter with controllable bi-polar and uni-polar capability
Inventor:
Roy A. Zaborowski
Patented Case
View Patent ↗
Granted: Oct 18, 1983
Filed: Mar 25, 1981
Inventor
Roy A. Zaborowski
Assignee (at issue)
Sperry Corp.
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.