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发明名称
Film reel
摘要
申请公布号
US2358504(A)
申请公布日期
1944.09.19
申请号
US19440525744
申请日期
1944.03.09
申请人
GOLDBERG JACOB M
发明人
GOLDBERG JACOB M.
分类号
G03B21/32
主分类号
G03B21/32
代理机构
代理人
主权项
地址
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