- 专利标题: Variable-speed mechanism.
-
申请号: US1909479500申请日: 1909-02-23
-
公开(公告)号: US948025A公开(公告)日: 1910-02-01
- 发明人: SCHATZ HERMAN W
- 申请人: AMERICAN TOOL WORKS CO
- 专利权人: American Tool Works Co
- 当前专利权人: American Tool Works Co
- 优先权: US1909479500 1909-02-23
信息查询