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发明名称
Film clip
摘要
申请公布号
US2528668(A)
申请公布日期
1950.11.07
申请号
US19490088135
申请日期
1949.04.18
申请人
SCHENKEL ELMER E
发明人
SCHENKEL ELMER E.
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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