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发明名称
Surveyor's stakes
摘要
申请公布号
US2773470(A)
申请公布日期
1956.12.11
申请号
US19540459159
申请日期
1954.09.29
申请人
JOHN ALGER
发明人
ALGER JOHN
分类号
G01C15/06
主分类号
G01C15/06
代理机构
代理人
主权项
地址
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