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发明名称
POLIER-, SCHLEIF- UND KONTAKTSCHEIBE.
摘要
申请公布号
DE1709372(U)
申请公布日期
1955.10.20
申请号
DE195500K9384U
申请日期
1955.05.09
申请人
KIESELCHEMIE, INH. WALTER DREWES
发明人
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主分类号
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