Granted Patent
Utility
US 4,574,437 · App. 06/736,990
Methods and device for terminating tachycardia
Inventors:
Christer H. A. Segerstad, Hans Vallin
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: May 23, 1985
Inventors
Christer H. A. Segerstad
Hans Vallin
Assignee (at issue)
Siemens Aktiengesellschaft
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.