Granted Patent
Utility
US 5,224,943 · App. 07/689,894
Cryosurgical apparatus
Inventor:
Robert William Goddard
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Jul 19, 1991
Inventor
Robert William Goddard
Assignee (at issue)
Spembly Medical Limited
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.