发明名称 Building panel and method of making same
摘要 There is disclosed a building panel and a method for forming same, wherein elongate rods of foamed plastic material are disposed within channels on opposite sides of a sheet of relatively rigid plastic material to a depth overlapping with rods in adjacent channels and layers of relatively rigid, plastic material are disposed over the outer faces of the rods and joined to the side walls of the channel so as to encapsulate the rods.
申请公布号 US5199240(A) 申请公布日期 1993.04.06
申请号 US19910780259 申请日期 1991.10.21
申请人 EWALD, JR., HERBERT J. 发明人 EWALD, JR., HERBERT J.
分类号 E04C2/20;E04C2/32;E04D13/16 主分类号 E04C2/20
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