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发明名称
Precision process camera
摘要
申请公布号
US2570668(A)
申请公布日期
1951.10.09
申请号
US19470791515
申请日期
1947.12.13
申请人
HALPERN BERNARD R
发明人
HALPERN BERNARD R.
分类号
G03B27/32
主分类号
G03B27/32
代理机构
代理人
主权项
地址
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