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发明名称
Verstellbarer metallener Grubenstempel
摘要
申请公布号
DE930509(C)
申请公布日期
1955.07.18
申请号
DE1953R012496
申请日期
1953.09.05
申请人
RUHRSTAHL AKTIENGESELLSCHAFT
发明人
SANDMANN WALTER
分类号
E21D15/32
主分类号
E21D15/32
代理机构
代理人
主权项
地址
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