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发明名称
Building block
摘要
申请公布号
US2031194(A)
申请公布日期
1936.02.18
申请号
US19350040797
申请日期
1935.09.16
申请人
THOMPSON HOWARD E
发明人
THOMPSON HOWARD E.
分类号
A63H33/08
主分类号
A63H33/08
代理机构
代理人
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