发明名称 Clusterable learning module
摘要 An educational module, having removable panels, the individual modules being capable of being clusterd into different groupings. Six vertical poles and two fixed end panels provide support for a writing surface approximately midway of the length of the poles. The majority of the writing surface is enclosed by panels extending between the poles from slightly below the writing surface to the tops of the poles. Five panels are provided, with several of the panels being removable and interchangeable without dismantling the module.
申请公布号 US3869992(A) 申请公布日期 1975.03.11
申请号 US19720287842 申请日期 1972.09.11
申请人 KRAMER, EDWARD J. 发明人 KRAMER, EDWARD J.
分类号 A47B41/00;E04B2/74;G09B5/02;(IPC1-7):A47B57/00 主分类号 A47B41/00
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