Granted Patent
Utility
US 5,643,579 · App. 08/283,231
Oral vaccines
Inventors:
Paul P. Hung, Alan R. Davis
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Jul 29, 1994
Inventors
Paul P. Hung
Alan R. Davis
Assignee (at issue)
Amerimas Home Products, 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.