Granted Patent
Utility
US 4,166,134 · App. 05/804,840
Method for improving flexibility retention of chewing gum
Inventors:
Frank Witzel, K. Warren Clark, Abraham I. Bakal
Patented Case
View Patent ↗
Granted: Aug 28, 1979
Filed: Jun 8, 1977
Inventors
Frank Witzel
K. Warren Clark
Abraham I. Bakal
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.