Granted Patent
Utility
US 3,977,593 · App. 05/621,957
Carton with double, wall and bottom
Inventor:
Lee Rotman
Patented Case
View Patent ↗
Granted: Aug 31, 1976
Filed: Oct 14, 1975
Inventor
Lee Rotman
Assignee (at issue)
The A. L. Garber 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.