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发明名称
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摘要
申请公布号
US2010274(A)
申请公布日期
1935.08.06
申请号
US19330700803
申请日期
1933.12.04
申请人
MARTIN & SCHWARTZ, INC.
发明人
PLEUTHNER CHARLES
分类号
G09F7/08
主分类号
G09F7/08
代理机构
代理人
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