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发明名称
Ladder jack
摘要
申请公布号
US1906275(A)
申请公布日期
1933.05.02
申请号
US19310557545
申请日期
1931.08.17
申请人
THE CLEVELAND WROUGHT PRODUCTS COMPANY
发明人
KRAMER CARL E.
分类号
E06C7/16
主分类号
E06C7/16
代理机构
代理人
主权项
地址
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