Granted Patent
Utility
US 5,540,657 · App. 08/360,512
Delivery device for injectable materials
Inventors:
Christine M. Kurjan, Amy M. Droste, James J. Feuhrer, Robert Joseph Fisher, Dennis M. DeCamp
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Dec 21, 1994
Inventors
Christine M. Kurjan
Amy M. Droste
James J. Feuhrer
Robert Joseph Fisher
Dennis M. DeCamp
Assignee (at issue)
COLLAGEN CORPORATION
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.