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经营范围
发明名称
An improved mark stone
摘要
申请公布号
GB336827(A)
申请公布日期
1930.10.23
申请号
GB19290033874
申请日期
1929.11.06
申请人
WERNER TREUTLER
发明人
分类号
G01C15/04
主分类号
G01C15/04
代理机构
代理人
主权项
地址
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