Granted Patent
Utility
US 5,064,413 · App. 07/434,250
Needleless hypodermic injection device
Inventors:
Charles M. McKinnon, Takaaki Nakagawa, Carl E. Wilcox
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: Nov 9, 1989
Inventors
Charles M. McKinnon
Takaaki Nakagawa
Carl E. Wilcox
Assignee (at issue)
Bioject 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.