Granted Patent
Utility
US 4,998,975 · App. 07/429,440
Travenously placed defibrillation leads
Inventors:
Donald M. Cohen, James R. Thacker
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Oct 30, 1989
Inventors
Donald M. Cohen
James R. Thacker
Assignee (at issue)
Siemens Pacesetter, Inc.
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.