Granted Patent
Utility
US 5,154,699 · App. 07/551,142
Safety winged needle device for use with fistulas
Inventor:
Dana Wm. Ryan
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Jul 11, 1990
Inventor
Dana Wm. Ryan
Assignee (at issue)
Ryan Medical, 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.