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发明名称
Door controller
摘要
申请公布号
US2414894(A)
申请公布日期
1947.01.28
申请号
US19450572794
申请日期
1945.01.15
申请人
FRANK PFENT
发明人
PFENT FRANK
分类号
E05F1/10;E05F1/14
主分类号
E05F1/10
代理机构
代理人
主权项
地址
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