发明授权
- 专利标题: Ventilator.
-
申请号: US1902123861申请日: 1902-09-18
-
公开(公告)号: US755095A公开(公告)日: 1904-03-22
- 发明人: YAWMAN FREDERICK G
- 申请人: CHARLES ENGLERT JR , YAWMAN FREDERICK G
- 专利权人: Charles Englert Jr,Frederick G Yawman
- 当前专利权人: Charles Englert Jr,Frederick G Yawman
- 优先权: US1902123861 1902-09-18
信息查询