Granted Patent
Utility
US 4,324,109 · App. 06/242,219
Ice-making apparatus with hot gas defrost
Inventor:
Milton W. Garland
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Mar 10, 1981
Inventor
Milton W. Garland
Assignee (at issue)
Frick 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.