Granted Patent
Utility
US 4,359,160 · App. 06/212,920
Nestable foam cup with improved heat retention and the process for its manufacture
Inventors:
Donald W. Myers, Samantha L. Vivlamore
Patented Case
View Patent ↗
Granted: Nov 16, 1982
Filed: Dec 4, 1980
Inventors
Donald W. Myers
Samantha L. Vivlamore
Assignee (at issue)
Mobil Oil Corporation
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.