Granted Patent
Utility
US 4,448,196 · App. 06/393,801
Delta modulator for measuring voltage levels in a heart pacer
Inventors:
David Money, Tibor A. Nappholz
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Jun 30, 1982
Inventors
David Money
Tibor A. Nappholz
Assignee (at issue)
Telectronics Pty. Limited
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.