发明授权
- 专利标题: Angle-cock holder.
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申请号: US1914875308申请日: 1914-12-03
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公开(公告)号: US1162030A公开(公告)日: 1915-11-30
- 发明人: CAMPBELL STERLING H
- 申请人: RAILWAY DEVICES CO
- 专利权人: Railway Devices Co
- 当前专利权人: Railway Devices Co
- 优先权: US1914875308 1914-12-03