Granted Patent
Utility
US 4,451,820 · App. 06/296,733
Charge redistribution integratable D/A convertor
Inventor:
Christopher W. Kapral
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Aug 27, 1981
Inventor
Christopher W. Kapral
Assignee (at issue)
GTE Automatic Electric Incorporated
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.