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发明名称
Gate hook
摘要
申请公布号
US1803245(A)
申请公布日期
1931.04.28
申请号
US19290353100
申请日期
1929.04.06
申请人
GRAFF EARL L H
发明人
GRAFF EARL L. H.
分类号
E05C19/10
主分类号
E05C19/10
代理机构
代理人
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