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发明名称
Betonhohlbalken
摘要
申请公布号
DE1609773(A1)
申请公布日期
1969.11.13
申请号
DE19671609773
申请日期
1967.12.13
申请人
PELIKAN,FRANZ
发明人
PELIKAN,FRANZ
分类号
E04B5/06;E04C3/20
主分类号
E04B5/06
代理机构
代理人
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地址
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