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发明名称
Extension ladder
摘要
申请公布号
US1748799(A)
申请公布日期
1930.02.25
申请号
US19270215736
申请日期
1927.08.26
申请人
SCARAMUZZA GIOVANNI B
发明人
SCARAMUZZA GIOVANNI B.
分类号
E06C1/32
主分类号
E06C1/32
代理机构
代理人
主权项
地址
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