Granted Patent
Utility
US 5,319,937 · App. 08/052,290
Thermoelectric cooler and warmer
Inventors:
Udo Fritsch, James J. J. Costello
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Apr 26, 1993
Inventors
Udo Fritsch
James J. J. Costello
Assignee (at issue)
Igloo Products Corp.
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.