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发明名称
Slide filing means
摘要
申请公布号
US2619233(A)
申请公布日期
1952.11.25
申请号
US19470730832
申请日期
1947.02.25
申请人
TECHNICON INTERNATIONAL, LTD.
发明人
WEISKOPF EDWIN C.
分类号
G03B21/54
主分类号
G03B21/54
代理机构
代理人
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