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发明名称
Door closer
摘要
申请公布号
US1908870(A)
申请公布日期
1933.05.16
申请号
US19310569983
申请日期
1931.10.20
申请人
发明人
SJOSTROM JOHANNES
分类号
E05F3/06
主分类号
E05F3/06
代理机构
代理人
主权项
地址
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