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发明名称
Device for demonstrating the action of cords and the like
摘要
申请公布号
US2109171(A)
申请公布日期
1938.02.22
申请号
US19350038754
申请日期
1935.08.31
申请人
WINGFOOT CORPORATION
发明人
GOULD PHILETUS S.
分类号
G09B25/02
主分类号
G09B25/02
代理机构
代理人
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地址
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