发明授权
- 专利标题: Check-valve.
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申请号: US1910567309申请日: 1910-06-16
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公开(公告)号: US1039749A公开(公告)日: 1912-10-01
- 发明人: INGRAM ATKIN M
- 申请人: WILLIAM J GARDNER , INGRAM ATKIN M
- 专利权人: William J Gardner,Atkin M Ingram
- 当前专利权人: William J Gardner,Atkin M Ingram
- 优先权: US1910567309 1910-06-16
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