Granted Patent
Utility
US 6,120,457 · App. 08/887,481
In vivo zeroing of catheter pressure sensor
Inventors:
Alan Coombes, Eric J. Brown
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Jul 2, 1997
Inventors
Alan Coombes
Eric J. Brown
Assignee (at issue)
Johnson & Johnson Professional, 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.