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发明名称
Check construction
摘要
申请公布号
US1818250(A)
申请公布日期
1931.08.11
申请号
US19290374461
申请日期
1929.06.28
申请人
HARRAH PHILIP J;HARRAH CHESTER P
发明人
HARRAH PHILIP J.;HARRAH CHESTER P.
分类号
E05F3/10
主分类号
E05F3/10
代理机构
代理人
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地址
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