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发明名称
Building block
摘要
申请公布号
US1779790(A)
申请公布日期
1930.10.28
申请号
US19290333368
申请日期
1929.01.18
申请人
EDUCATIONAL CARD & GAME CORPORATION
发明人
WOLFE EVERETT K.
分类号
A63H33/06
主分类号
A63H33/06
代理机构
代理人
主权项
地址
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