发明授权
- 专利标题: Method of forging
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申请号: US388648申请日: 1948-01-23
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公开(公告)号: US2587864A公开(公告)日: 1952-03-04
- 发明人: LEFERE MAURICE P
- 申请人: LEFERE FORGE & MACHINE COMPANY
- 专利权人: Lefere Forge & Machine Company
- 当前专利权人: Lefere Forge & Machine Company
- 优先权: US388648 1948-01-23
- 主分类号: B21K1/28
- IPC分类号: B21K1/28
公开/授权文献
- US4455693A Self-contained, two-piece gasket seal assembly for drains 公开/授权日:1984-06-26
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