发明名称 MAGNETIC DISPLAY BOARD SYMBOLS
摘要 <p>A magnetic display board article comprises a thin, planar laminate of a ferrous, magnetically attractable particle layer sandwiched between rigid plastic or paper layers. The article is preferably formed as a multiple symbol-containing sheet and may have scored, die-cut patterns therein and printed matter within each symbol pattern following the score outline. Each symbol pattern is manually removable along the scored edges to separate it from the sheet.</p>
申请公布号 CA1027359(A) 申请公布日期 1978.03.07
申请号 CA19740193003 申请日期 1974.02.20
申请人 WRIGHT LINE INC. 发明人 DEAN, CARL J.;MCCALLUM, DONALD B.
分类号 B44F5/00;E04G7/30;G09F3/02;G09F3/04;G09F7/04 主分类号 B44F5/00
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