Granted Patent
Utility
US 5,358,491 · App. 08/120,257
Cartridge-needle unit having retractable needle
Inventors:
Kevin M. Johnson, Dennis J. O'Dea
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Sep 13, 1993
Inventors
Kevin M. Johnson
Dennis J. O'Dea
Assignee (at issue)
Sterling Winthrop 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.