Granted Patent
Utility
US 5,237,996 · App. 07/833,746
Endocardial electrical mapping catheter
Inventors:
Lewis K. Waldman, Peng-Sheng Chen
Patented Case
View Patent ↗
Granted: Aug 24, 1993
Filed: Feb 11, 1992
Inventors
Lewis K. Waldman
Peng-Sheng Chen
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.