Granted Patent
Utility
US 4,869,052 · App. 07/269,898
Packaging machine
Inventor:
Rodney K. Calvert
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Nov 10, 1988
Inventor
Rodney K. Calvert
Assignee (at issue)
The Mead Corporation
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.