Granted Patent
Utility
US 5,697,550 · App. 08/781,241
Multi-layered insulated cup formed from folded sheet
Inventors:
Richard F. Varano, Claus E. Sadlier
Patented Case
View Patent ↗
Granted: Dec 16, 1997
Filed: Jan 10, 1997
Inventors
Richard F. Varano
Claus E. Sadlier
Assignees (at issue)
Insulair, Inc.
Sherwood Tool Incorporated
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.