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发明名称
Layout instrument
摘要
申请公布号
US2872733(A)
申请公布日期
1959.02.10
申请号
US19560571341
申请日期
1956.03.13
申请人
CHEW CLARENCE W
发明人
CHEW CLARENCE W.
分类号
G01C15/12
主分类号
G01C15/12
代理机构
代理人
主权项
地址
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