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发明名称
DOOR OPENING APPARATUS
摘要
申请公布号
US3534499(A)
申请公布日期
1970.10.20
申请号
USD3534499
申请日期
1969.01.27
申请人
JOHN L. CZINGER JR.
发明人
BERTRAN J. CHAFFEE
分类号
E05F15/20;(IPC1-7):E05F15/20
主分类号
E05F15/20
代理机构
代理人
主权项
地址
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