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Gottfried W. Ehrenstein
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Kassel, DE
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last 30 patents
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Patent Grant
Method for controlling machine parameters in friction welding
Patent number
4,936,502
Issue date
Jun 26, 1990
Branson Ultraschall Niederlassung der Emerson Technologies GmbH & CO
Alois K. H. Schlarb
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL