Granted Patent
Utility
US 4,548,320 · App. 06/165,034
Heavy-duty full-depth beverage case
Inventor:
Theodor M. Box
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Jul 1, 1980
Inventor
Theodor M. Box
Assignee (at issue)
Piper Industries of Texas, 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.