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经营范围
发明名称
A multilayer beam
摘要
申请公布号
GB2022509(A)
申请公布日期
1979.12.19
申请号
GB19790018576
申请日期
1979.05.29
申请人
HEGGENSTALLER A
发明人
分类号
B27N5/00;E04C3/28;(IPC1-7):B32B21/00;B32B5/16;B32B21/02;B32B21/04;B32B21/12;B32B21/14
主分类号
B27N5/00
代理机构
代理人
主权项
地址
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