发明授权
- 专利标题: Door-closing mechanism.
- 专利标题(中): 门关闭机构
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申请号: US1909492827申请日: 1909-04-29
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公开(公告)号: US1181075A公开(公告)日: 1916-04-25
- 发明人: HASENPFLUG JOHN
- 申请人: CHAMPION SAFETY LOCK COMPANY
- 专利权人: Champion Safety Lock Company
- 当前专利权人: Champion Safety Lock Company
- 优先权: US1909492827 1909-04-29
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