发明授权
- 专利标题: Testing device for tennis racquets
- 专利标题(中): 网球拍测试装置
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申请号: US449010申请日: 1982-11-22
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公开(公告)号: US4488444A公开(公告)日: 1984-12-18
- 发明人: Ulrich Weidmann , Hans R. Weber
- 申请人: Ulrich Weidmann , Hans R. Weber
- 专利权人: Ulrich Weidmann,Weber Hans R
- 当前专利权人: Ulrich Weidmann,Weber Hans R
- 优先权: CHX1963/81 19810323
- 主分类号: G01L5/06
- IPC分类号: G01L5/06 ; G01M5/00 ; G01N3/20 ; G01N33/00
摘要:
Apparatus and process for separately measuring tension of strings, stiffness of frame in both strung and unstrung condition, and point of balance of a tennis racquet.
公开/授权文献
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