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Franz Steimann
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Gelsenkirchen-Horst, DE
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last 30 patents
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Patent Grant
Door of the self-locking type
Patent number
4,107,879
Issue date
Aug 22, 1978
Didier Engineering GmbH.
Franz Steimann
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...