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Gebr. Eickhoff Maschinenfabrik and Eisengiesserei m.b.H.
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Bochum, DE
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Patent Grant
Apparatus for controlling the discharge of pressurized liquid from...
Patent number
4,691,967
Issue date
Sep 8, 1987
Gebr. Eickhoff Maschinenfabrik and Eisengiesserei m.b.H.
Herbert Schupphaus
E21 - EARTH DRILLING MINING