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发明名称
VERFAHREN ZUR ABDICHTUNG VON ABWASSERKANAL-STAHLBETONROHREN BEI DURCHPRESSUNGEN
摘要
申请公布号
DD234892(A1)
申请公布日期
1986.04.16
申请号
DD19850273415
申请日期
1985.02.20
申请人
ZBE MELIORATIONSGENOSSENSCHAFT,"NAUENER RANDLUCH",,,DD
发明人
BECKER,BERNHARD,DD
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