发明授权
- 专利标题: Record card controlled printing mechanisms
- 专利标题(中): 记录卡控制打印机制
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申请号: US55012855申请日: 1955-11-30
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公开(公告)号: US2837023A公开(公告)日: 1958-06-03
- 发明人: JOHN ASH DENIS , ARTHUR DAVIS ROGER
- 申请人: BRITISH TABULATING MACH CO LTD
- 专利权人: BRITISH TABULATING MACH CO Ltd
- 当前专利权人: BRITISH TABULATING MACH CO Ltd
- 优先权: GB429555 1955-02-14
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