Granted Patent
Utility
US 4,509,311 · App. 06/305,482
Method and apparatus for loading and unloading package-forming machine
Inventor:
Carroll P. Hartl
Patented Case
View Patent ↗
Granted: Apr 9, 1985
Filed: Sep 25, 1981
Inventor
Carroll P. Hartl
Assignee (at issue)
General Foods 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.