发明名称 Easy-clamp scroll frame
摘要 An art needlework scroll frame is disclosed in which the free edges of the base fabric are held in step clamps which provided uniform transverse tension to the fabric without damage thereto and which maintains perpendicularity in the warp and weft of the fabric.
申请公布号 US4471542(A) 申请公布日期 1984.09.18
申请号 US19820400057 申请日期 1982.08.30
申请人 UMBENHAUER, DONALD J. 发明人 UMBENHAUER, DONALD J.
分类号 D05C1/02;(IPC1-7):D05C1/02 主分类号 D05C1/02
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