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经营范围
发明名称
Sash balance
摘要
申请公布号
US1762821(A)
申请公布日期
1930.06.10
申请号
US19280296575
申请日期
1928.07.31
申请人
KERSTING ALBERT H
发明人
KERSTING ALBERT H.
分类号
E05D13/00
主分类号
E05D13/00
代理机构
代理人
主权项
地址
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