Granted Patent
Utility
US 6,419,680 · App. 08/493,739
CT and MRI visible index markers for stereotactic localization
Inventors:
Eric R. Cosman, Theodore Roberts
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jun 22, 1995
Inventors
Eric R. Cosman
Theodore Roberts
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.