Granted Patent
Utility
US 4,796,937 · App. 07/106,227
Insulating shell and pouring aid for container and method of making same
Inventor:
Douglas Andrea
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Oct 6, 1987
Inventor
Douglas Andrea
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.