发明授权
- 专利标题: Steam-trap.
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申请号: US1902123825申请日: 1902-09-18
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公开(公告)号: US730213A公开(公告)日: 1903-06-02
- 发明人: KOEHLER FREDERICK D , MONAHAN THOMAS W
- 申请人: KOEHLER FREDERICK D , MONAHAN THOMAS W
- 专利权人: Frederick D Koehler,Thomas W Monahan
- 当前专利权人: Frederick D Koehler,Thomas W Monahan
- 优先权: US1902106854 1902-05-12; US1902123825 1902-09-18
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