Granted Patent
Utility
US 5,464,437 · App. 08/088,901
Benign prostatic hyperplasia treatment catheter with urethral cooling
Inventors:
John M. Reid, James V. Kauphusman, Christopher H. Porter, Bruce H. Neilson
Patented Case
View Patent ↗
Granted: Nov 7, 1995
Filed: Jul 8, 1993
Inventors
John M. Reid
James V. Kauphusman
Christopher H. Porter
Bruce H. Neilson
Assignee (at issue)
Urologix, 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.