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发明名称
Sectional target
摘要
申请公布号
US2362513(A)
申请公布日期
1944.11.14
申请号
US19420446365
申请日期
1942.06.09
申请人
WALDMANN CARL A
发明人
WALDMANN CARL A.
分类号
F41J1/00
主分类号
F41J1/00
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