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发明名称
Deckenstein mit Druckschicht.
摘要
申请公布号
CH139063(A)
申请公布日期
1930.03.31
申请号
CHD139063
申请日期
1929.03.23
申请人
SPERLE,EUGEN
发明人
SPERLE,EUGEN
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主分类号
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