Granted Patent
Utility
US 5,531,852 · App. 08/234,824
Apparatus and method for end sealing a carton
Inventors:
Joseph C. Walsh, Robert L. Conatser
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: Apr 28, 1994
Inventors
Joseph C. Walsh
Robert L. Conatser
Assignee (at issue)
Graphic Packaging 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.