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经营范围
发明名称
Chain block
摘要
申请公布号
US1903218(A)
申请公布日期
1933.03.28
申请号
US19310560387
申请日期
1931.08.31
申请人
ELIAS KNIGHT
发明人
KNIGHT ELIAS
分类号
B66D3/16
主分类号
B66D3/16
代理机构
代理人
主权项
地址
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