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发明名称
Bohrkopf mit UEberlastungssicherung
摘要
申请公布号
DE735877(C)
申请公布日期
1943.05.31
申请号
DE1940C055589D
申请日期
1940.01.14
申请人
KARL CERNY
发明人
CERNY KARL
分类号
B23B31/02
主分类号
B23B31/02
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