Granted Patent
Utility
US 5,516,880 · App. 08/496,762
Fluid bed cooling system for polymer processing
Inventor:
John J. Walsh
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Jun 29, 1995
Inventor
John J. Walsh
Assignee (at issue)
HOSOKAWA BEPEX GMBH
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.