Coal-cutting drum having ejection nozzles
WALTER HEMMER, RAINER JOHN, HANS KRUMMENAUER, LUDWIG RICHTER ET PAUL KOLLING
Year of Publication 06.02.1987
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Year of Publication 06.02.1987
Patent
TAMBOUR DE HAVAGE A TUYERES D'EJECTION
WALTER HEMMER, RAINER JOHN, HANS KRUMMENAUER, LUDWIG RICHTER ET PAUL KOLLING
Year of Publication 01.12.1989
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Year of Publication 01.12.1989
Patent