Granted Patent
Utility
US 6,575,726 · App. 09/655,554
Apparatus for cooling an extruded plastic sheet
Inventor:
James C. Nissel
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Sep 6, 2000
Inventor
James C. Nissel
Assignee (at issue)
Welex Incorporated
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.