Granted Patent
Utility
US 4,846,775 · App. 07/172,697
Method for assembling composite carton blanks
Inventor:
Melvin B. Herrin
Patented Case
View Patent ↗
Granted: Jul 11, 1989
Filed: Mar 23, 1988
Inventor
Melvin B. Herrin
Assignee (at issue)
Klearfold, 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.