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发明名称
Slide changing means
摘要
申请公布号
US2711602(A)
申请公布日期
1955.06.28
申请号
US19510215371
申请日期
1951.03.13
申请人
AIREQUIPT MANUFACTURING CO., INC.
发明人
WIKLUND CARL H.
分类号
G03B23/04
主分类号
G03B23/04
代理机构
代理人
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