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经营范围
发明名称
Roof jack
摘要
申请公布号
US1743371(A)
申请公布日期
1930.01.14
申请号
US19280268524
申请日期
1928.04.09
申请人
MONTAG JOSEPH W
发明人
MONTAG JOSEPH W.
分类号
E04G3/26
主分类号
E04G3/26
代理机构
代理人
主权项
地址
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