Granted Patent
Utility
US 5,941,474 · App. 08/946,236
System, apparatus and method for unloading and loading winder shafts
Inventor:
Darrell D. Cushing
Patented Case
View Patent ↗
Granted: Aug 24, 1999
Filed: Oct 7, 1997
Inventor
Darrell D. Cushing
Assignee (at issue)
Huntsman 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.