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经营范围
发明名称
Photoflash unit
摘要
申请公布号
US2969721(A)
申请公布日期
1961.01.31
申请号
US19580743658
申请日期
1958.06.23
申请人
POLAROID CORPORATION
发明人
CASSELMAN ROBERT C.;JR. DEXTER P. COOPER,;OTIS WILBUR C.
分类号
G03B15/04
主分类号
G03B15/04
代理机构
代理人
主权项
地址
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