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George M. Koppelman
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New York, NY, US
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last 30 patents
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Patent Grant
Model generation system having closed-loop extrusion nozzle positio...
Patent number
5,402,351
Issue date
Mar 28, 1995
International Business Machines Corporation
John S. Batchelder
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Model generation system having closed-loop extrusion nozzle positio...
Patent number
5,303,141
Issue date
Apr 12, 1994
International Business Machines Corporation
John S. Batchelder
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Grant
Shaping geometric objects by cumulative translational sweeps
Patent number
4,785,399
Issue date
Nov 15, 1988
International Business Machines Corporation
Roger C. Evans
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL