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Bruno Haye
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Coulommiers, FR
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last 30 patents
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Patent Grant
Seal and process for producing such seal
Patent number
6,129,485
Issue date
Oct 10, 2000
Phoenix Aktiengesellschaft
Werner Grabe
E21 - EARTH DRILLING MINING
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Patent Grant
Seal arrangement for tubular tunnel segments
Patent number
5,888,023
Issue date
Mar 30, 1999
Phoenix Aktiengesellschaft
Werner Grabe
E21 - EARTH DRILLING MINING