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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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