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发明名称
Film reel
摘要
申请公布号
US2545004(A)
申请公布日期
1951.03.13
申请号
US19480061548
申请日期
1948.11.23
申请人
TURE ORTENBLAD;JOHANSEN BERNHARD A
发明人
ORTENBLAD TURE;JOHANSEN BERNHARD A.
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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