Granted Patent
Utility
US 4,905,698 · App. 07/243,689
Method and apparatus for catheter location determination
Inventors:
Clair Strohl, Michael C. Ferragamo, Donald A. Kay, Alan R. Shapiro, Gary Whipple
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Sep 13, 1988
Inventors
Clair Strohl
Michael C. Ferragamo
Donald A. Kay
Alan R. Shapiro
Gary Whipple
Assignee (at issue)
Pharmacia Deltec, 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.