Granted Patent
Utility
US 6,772,573 · App. 10/233,280
Automatic stretch film roll changer
Inventor:
Roger Federeszyn
Patented Case
View Patent ↗
Granted: Aug 10, 2004
Filed: Aug 28, 2002
Inventor
Roger Federeszyn
Assignee (at issue)
Orion Packaging Inc.
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.