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发明名称
Trestle or horse
摘要
申请公布号
US2216187(A)
申请公布日期
1940.10.01
申请号
US19390293768
申请日期
1939.09.07
申请人
HECTOR DION
发明人
DION HECTOR
分类号
E04G1/34
主分类号
E04G1/34
代理机构
代理人
主权项
地址
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