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发明名称
OPEN-WORK ASSEMBLY AND GIRDER THEREFOR
摘要
申请公布号
US3474588(A)
申请公布日期
1969.10.28
申请号
USD3474588
申请日期
1967.03.03
申请人
STEFFENS & NOELLE AG.
发明人
FREI OTTO;ROLF NERLICH
分类号
E04B1/19;E04B7/00;(IPC1-7):E04B5/52;E04C2/42
主分类号
E04B1/19
代理机构
代理人
主权项
地址
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