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发明名称
FRICTIONAL HINGE FOR WINDOWS
摘要
申请公布号
CA423360(A)
申请公布日期
1944.10.24
申请号
CAD423360
申请日期
申请人
ALF OTTO HELLKVIST
发明人
ALF OTTO HELLKVIST
分类号
主分类号
代理机构
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