Granted Patent
Utility
US 5,221,268 · App. 07/804,837
Multiple dose control apparatus
Inventors:
Russell Barton, Maresala Milo, Charles N. Bunn
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Dec 6, 1991
Inventors
Russell Barton
Maresala Milo
Charles N. Bunn
Assignee (at issue)
Block 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.