Granted Patent
Utility
US 5,617,867 · App. 08/344,252
Tonometer mounting device
Inventors:
Robert D. Butterfield, Charles R. Holdaway, Stephen A. Martin, Stanley Boyer, Christine A. Giurdanella-Renzi
Patented Case
View Patent ↗
Granted: Apr 8, 1997
Filed: Nov 23, 1994
Inventors
Robert D. Butterfield
Charles R. Holdaway
Stephen A. Martin
Stanley Boyer
Christine A. Giurdanella-Renzi
Assignee (at issue)
IVAC Medical Systems, 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.