Granted Patent
Utility
US 4,238,475 · App. 06/062,861
Chewing cum capable of releasing finely divided water-insoluble materials therefrom
Inventors:
Frank Witzel, Wayne J. Puglia, K. Warren Clark, Donald A. M. Mackay
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Aug 1, 1979
Inventors
Frank Witzel
Wayne J. Puglia
K. Warren Clark
Donald A. M. Mackay
Assignee (at issue)
Lifesavers LLC
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.