Granted Patent
Utility
US 5,303,141 · App. 08/034,180
Model generation system having closed-loop extrusion nozzle positioning
Inventors:
John S. Batchelder, Huntington W. Curtis, Douglas S. Goodman, Franklin Gracer, Robert R. Jackson, George M. Koppelman, John D. Mackay
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: Mar 22, 1993
Inventors
John S. Batchelder
Huntington W. Curtis
Douglas S. Goodman
Franklin Gracer
Robert R. Jackson
George M. Koppelman
John D. Mackay
Assignee (at issue)
International Business Machines Corporation
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.