发明名称 Canvas frame spring tension wire clamp apparatus
摘要 Spring tension wire clamp apparatus includes a screw adapted to extend into a wooden frame with a spacer between the frame and a clamp which extends outwardly from the screw and adapted to be disposed against a canvas frame for holding the canvas frame into the picture frame.
申请公布号 US4319420(A) 申请公布日期 1982.03.16
申请号 US19810223250 申请日期 1981.01.08
申请人 CLINTON, ROBERT E. 发明人 CLINTON, ROBERT E.
分类号 A47G1/06;B44D3/18;(IPC1-7):G09F1/12 主分类号 A47G1/06
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