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发明名称
Extension ladder
摘要
申请公布号
US1964067(A)
申请公布日期
1934.06.26
申请号
US19320591270
申请日期
1932.02.06
申请人
LEACH COMPANY
发明人
LEACH ELBERT C.;HAMREN ERIC O.
分类号
E06C1/12;E06C1/34;E06C7/48
主分类号
E06C1/12
代理机构
代理人
主权项
地址
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