Granted Patent
Utility
US 4,834,716 · App. 07/074,721
Protected cannula
Inventor:
George B. Ogle, II
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Jul 17, 1987
Inventor
George B. Ogle, II
Assignee (at issue)
IMS GmbH
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.