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经营范围
发明名称
Projecting apparatus
摘要
申请公布号
US2449187(A)
申请公布日期
1948.09.14
申请号
US19440566941
申请日期
1944.12.06
申请人
发明人
WALTERS GEORGE C.
分类号
F41B11/00
主分类号
F41B11/00
代理机构
代理人
主权项
地址
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