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发明名称
CONCEALED HANGING SYSTEM
摘要
申请公布号
US3423899(A)
申请公布日期
1969.01.28
申请号
USD3423899
申请日期
1966.10.18
申请人
KOPPERS CO. INC.
发明人
HARLAN J. DEMERS
分类号
E04B1/26;E06B3/984;(IPC1-7):E04C3/12
主分类号
E04B1/26
代理机构
代理人
主权项
地址
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