发明名称 Fastening device
摘要 A method and apparatus for joining building panels, such as portable partitions, walls, floors, ceilings, or roofs. A cam device is located in one panel or member and is magnetically operated to engage a mating element located in an adjacent panel or member.
申请公布号 US5038535(A) 申请公布日期 1991.08.13
申请号 US19890370289 申请日期 1989.06.22
申请人 VAN PRAAG, III, ALEX 发明人 VAN PRAAG, III, ALEX
分类号 E04B1/61;E04B2/74;E04B7/04;E04D13/064;E04D13/08 主分类号 E04B1/61
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