Granted Patent
Utility
US 4,917,229 · App. 07/288,867
Method and apparatus for stacking products
Inventor:
James F. Korkowski
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Dec 21, 1988
Inventor
James F. Korkowski
Assignee (at issue)
APV Douglas Machine 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.