发明授权
- 专利标题: Card of individually removable markers
- 专利标题(中): 单独可移动标记卡
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申请号: US46080354申请日: 1954-10-07
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公开(公告)号: US2797801A公开(公告)日: 1957-07-02
- 发明人: BISHOP JR JEROME H
- 申请人: WESTERN LITHOGRAPH COMPANY
- 专利权人: Western Lithograph Company
- 当前专利权人: Western Lithograph Company
- 优先权: US46080354 1954-10-07
- 主分类号: B42F21/00
- IPC分类号: B42F21/00 ; D06H1/04
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