Granted Patent
Utility
US 5,172,115 · App. 07/717,981
Ratiometric A/D converter with non-rationometric error offset
Inventors:
Donald A. Kerth, Douglas S. Piasecki
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Jun 21, 1991
Inventors
Donald A. Kerth
Douglas S. Piasecki
Assignee (at issue)
Crystal Semiconductor 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.