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发明名称
Sash balance
摘要
申请公布号
US2627082(A)
申请公布日期
1953.02.03
申请号
US19500150871
申请日期
1950.03.21
申请人
ADA I. TAPPAN
发明人
TAPPAN DEWITT
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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