Granted Patent
Utility
US 6,447,178 · App. 09/752,155
System, method, and apparatus for providing multiple extrusion widths
Inventors:
Michael R. Thering, Joseph B. Gault, John Straigis, Matthew R. Thomas, William C. May
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Dec 29, 2000
Inventors
Michael R. Thering
Joseph B. Gault
John Straigis
Matthew R. Thomas
William C. May
Assignee (at issue)
Applied Science Fiction, 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.