发明授权
- 专利标题: Type-writing machine.
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申请号: US1908422226申请日: 1908-03-20
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公开(公告)号: US921599A公开(公告)日: 1909-05-11
- 发明人: DOANE JOHN C
- 申请人: UNDERWOOD TYPEWRITER CO
- 专利权人: Underwood Typewriter Co
- 当前专利权人: Underwood Typewriter Co
- 优先权: US1908422226 1908-03-20
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