Granted Patent
Utility
US 4,465,227 · App. 06/568,955
Leak-proof carton
Inventors:
Paul F. Hood, Frank W. Locke
Patented Case
View Patent ↗
Granted: Aug 14, 1984
Filed: Jan 6, 1984
Inventors
Paul F. Hood
Frank W. Locke
Assignee (at issue)
Champion International Corporation Limited
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.