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发明名称
Sash balance
摘要
申请公布号
US2603828(A)
申请公布日期
1952.07.22
申请号
US19470782445
申请日期
1947.10.27
申请人
GRAND RAPIDS HARDWARE COMPANY
发明人
III HENRY RANDEL DICKINSON
分类号
E05D13/00
主分类号
E05D13/00
代理机构
代理人
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地址
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