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Dieter Jahn
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Bochum, DE
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last 30 patents
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Patent Grant
Gear rack for a mining machine
Patent number
4,397,199
Issue date
Aug 9, 1983
Gebr. Eickhoff, Maschinenfabrik und Eisengiesserei, m.b.H.
Dieter Jahn
E21 - EARTH DRILLING MINING
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Patent Grant
Cutter drum support arm for longwall mining machine
Patent number
4,328,996
Issue date
May 11, 1982
Gebr. Eickhoff Maschinenfabrik und Eisengiesserei m.b.H.
Dieter Jahn
E21 - EARTH DRILLING MINING