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Johannes Oertel
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Sonthofen, DE
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last 30 patents
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Patent Grant
Double shaft forced-feed mixer for continuous and discontinuous man...
Patent number
4,775,239
Issue date
Oct 4, 1988
BHS-Bayerische Berg-, Hutten- und Salzwerke AG
Rudolf Martinek
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL