Granted Patent
Utility
US 5,573,532 · App. 08/372,121
Cryogenic surgical instrument and method of manufacturing the same
Inventors:
Zhao H. Chang, John G. Baust, J. J. Finkelstein
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Jan 13, 1995
Inventors
Zhao H. Chang
John G. Baust
J. J. Finkelstein
Assignee (at issue)
Cryomedical Sciences, 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.