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发明名称
Door closer
摘要
申请公布号
US2187109(A)
申请公布日期
1940.01.16
申请号
US19390286459
申请日期
1939.07.25
申请人
BERNHOLTZ JOHN S
发明人
BERNHOLTZ JOHN S.
分类号
E05F1/10
主分类号
E05F1/10
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代理人
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