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发明名称
Aus einer schmiedeeisernen Platte bestehender Knieschuh
摘要
申请公布号
DE508961(C)
申请公布日期
1930.10.03
申请号
DED508961D
申请日期
申请人
ALFRED THIEMANN
发明人
分类号
E21D11/18
主分类号
E21D11/18
代理机构
代理人
主权项
地址
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