Granted Patent
Utility
US 4,437,396 · App. 06/425,430
Air heated sandwich bin
Inventors:
Robert F. Plattner, Raymond J. Arend, John A. VerBerkmoes
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: Sep 28, 1982
Inventors
Robert F. Plattner
Raymond J. Arend
John A. VerBerkmoes
Assignee (at issue)
Bastian Blessing Co., Inc.
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.