Granted Patent
Utility
US 5,286,254 · App. 07/937,464
Drug delivery apparatus and method
Inventors:
James Edward Shapland, Mark B. Knudson, Jin Shimada
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Aug 28, 1992
Inventors
James Edward Shapland
Mark B. Knudson
Jin Shimada
Assignee (at issue)
Cortrak 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.