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发明名称
Precision positioning device
摘要
申请公布号
US2890589(A)
申请公布日期
1959.06.16
申请号
US19560579417
申请日期
1956.04.19
申请人
DUVALL JR GEORGE P;GRANATA ROSARIO C
发明人
JR. GEORGE P. DUVALL,;GRANATA ROSARIO C.
分类号
G02B7/28
主分类号
G02B7/28
代理机构
代理人
主权项
地址
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