Granted Patent
Utility
US 6,203,481 · App. 08/475,627
Cushioning conversion machine
Inventors:
James Harding, Richard O. Ratzel
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Jun 7, 1995
Inventors
James Harding
Richard O. Ratzel
Assignee (at issue)
Ranpak Corp.
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.