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发明名称
Adjustable platform for opaque copy and picture projectors
摘要
申请公布号
US2463026(A)
申请公布日期
1949.03.01
申请号
US19460708402
申请日期
1946.11.07
申请人
CHARLES BESELER COMPANY
发明人
FIELD PHILIP M.
分类号
G03B21/06
主分类号
G03B21/06
代理机构
代理人
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地址
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