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发明名称
Optical plumbing device for establishing from an aerial location the position of a mark on the ground
摘要
申请公布号
US3276311(A)
申请公布日期
1966.10.04
申请号
US19620242334
申请日期
1962.12.04
申请人
BUCKMASTER JAMES L;LOVING HUGH B
发明人
BUCKMASTER JAMES L.;LOVING HUGH B.
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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