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发明名称
Plumb line guide
摘要
申请公布号
US1824321(A)
申请公布日期
1931.09.22
申请号
US19280315361
申请日期
1928.10.27
申请人
BAKER FRANCIS G
发明人
BAKER FRANCIS G.
分类号
G01C15/10
主分类号
G01C15/10
代理机构
代理人
主权项
地址
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