Granted Patent
Utility
US 4,913,147 · App. 07/100,250
Heart pacemaker system with shape-memory metal components
Inventors:
Ulf Fahlstrom, Jakub Hirschberg
Patented Case
View Patent ↗
Granted: Apr 3, 1990
Filed: Sep 23, 1987
Inventors
Ulf Fahlstrom
Jakub Hirschberg
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.