发明名称 Collapsible billboard sign
摘要 A collapsible sign, including a fixed frame, a plurality of sections hingedly and movably attached to the frame, the sign being movable the sections between a viewing position and a collapsed position. Adjacent pairs of the plurality of sections are positioned to provide an offset distance between axes of rotation located at each end of each section when the plurality of sections are in the viewing position.
申请公布号 US5613314(A) 申请公布日期 1997.03.25
申请号 US19950404979 申请日期 1995.03.16
申请人 MINNESOTA MINING AND MANUFACTURING COMPANY 发明人 LEVERENZ, CLIFFORD W.;COOPER, JAMSHED R.;SOHM, STEPHEN P.;RUDINA, JEHANGIR E.;LARSON, STEVEN C.
分类号 G09F13/04;G09F15/00;(IPC1-7):G09F15/00 主分类号 G09F13/04
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