Granted Patent
Utility
US 4,856,522 · App. 07/150,037
Rate-responsive, distributed-rate pacemaker
Inventor:
James Christopher Hansen
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: Jan 29, 1988
Inventor
James Christopher Hansen
Assignee (at issue)
Telectronic SA
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.