Granted Patent
Utility
US 5,004,121 · App. 07/467,932
Controlled heating baking pan
Inventor:
David J. Howe
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Jan 22, 1990
Inventor
David J. Howe
Assignee (at issue)
THE PROCTOR & GAMBLE COMPANY
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.