Granted Patent
Utility
US 4,463,844 · App. 06/333,639
Apparatus and method for return of empty aluminum cans
Inventors:
Stanley S. Huffman, Jan L. Dorfman, Robert Leland Frenkel, Ronald A. Pearce
Patented Case
View Patent ↗
Granted: Aug 7, 1984
Filed: Dec 23, 1981
Inventors
Stanley S. Huffman
Jan L. Dorfman
Robert Leland Frenkel
Ronald A. Pearce
Assignee (at issue)
Adolph Coors 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.