发明授权
- 专利标题: Rail-fastener.
-
申请号: US1913752158申请日: 1913-03-05
-
公开(公告)号: US1086411A公开(公告)日: 1914-02-10
- 发明人: SPENCER FRANK E
- 申请人: SPENCER FRANK E
- 专利权人: Frank E Spencer
- 当前专利权人: Frank E Spencer
- 优先权: US1913752158 1913-03-05