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发明名称
STRUCTURAL BEAM AND THE METHOD OF MANUFACTURING SUCH A BEAM
摘要
<p>A structural beam exhibits cross-sections of variable area along its longitudinal axis achieved by cold deformation (folding) of the side walls of an extruded shape.</p>
申请公布号
WO1993004897(A1)
申请公布日期
1993.03.18
申请号
NO1992000142
申请日期
1992.09.04
申请人
发明人
分类号
主分类号
代理机构
代理人
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地址
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