Granted Patent
Utility
US 4,838,154 · App. 07/051,841
Apparatus for extending the shelf life of fluid food products
Inventors:
Joseph E. Dunn, Jay S. Pearlman
Patented Case
View Patent ↗
Granted: Jun 13, 1989
Filed: May 18, 1987
Inventors
Joseph E. Dunn
Jay S. Pearlman
Assignee (at issue)
Maxwell Laboratories, 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.