Granted Patent
Utility
US 6,575,969 · App. 09/642,309
Cool-tip radiofrequency thermosurgery electrode system for tumor ablation
Inventors:
William J. Rittman, III, Eric R. Cosman
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Aug 21, 2000
Inventors
William J. Rittman, III
Eric R. Cosman
Assignee (at issue)
SHERWOOD SERVICES AG
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.