Granted Patent
Utility
US 4,390,021 · App. 06/245,215
Two pulse tachycardia control pacer
Inventors:
Roworth A. J. Spurrell, Tibor A. Nappholz, Stephen J. Swift
Patented Case
View Patent ↗
Granted: Jun 28, 1983
Filed: Mar 19, 1981
Inventors
Roworth A. J. Spurrell
Tibor A. Nappholz
Stephen J. Swift
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.