Granted Patent
Utility
US 4,396,635 · App. 06/396,524
Microwave cake mix
Inventors:
Richard M. Roudebush, Patrick Palumbo
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Jul 8, 1982
Inventors
Richard M. Roudebush
Patrick Palumbo
Assignee (at issue)
The Procter & 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.