发明授权
- 专利标题: Moving stairway.
-
申请号: US1130556D申请日:
-
公开(公告)号: US1130556A公开(公告)日: 1915-03-02
- 发明人: WHEELER GEORGE A , WHEELER H M
- 申请人: WHEELER GEORGE A , WHEELER H M
- 专利权人: George A Wheeler,H M Wheeler
- 当前专利权人: George A Wheeler,H M Wheeler
- 优先权: US1130556T null
信息查询