Granted Patent
Utility
US 4,144,435 · App. 05/853,581
Vessel for use in a microwave oven
Inventors:
Clarence O. Clark, Robert Louis DeAngelis, Kenneth F. Deffren, Thomas J. Flautt, Jr., Erwin A. Hofmann, Eugene Weinshenker
Patented Case
View Patent ↗
Granted: Mar 13, 1979
Filed: Nov 21, 1977
Inventors
Clarence O. Clark
Robert Louis DeAngelis
Kenneth F. Deffren
Thomas J. Flautt, Jr.
Erwin A. Hofmann
Eugene Weinshenker
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.