A whistling device |
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| 申请号 | EP88109136.7 | 申请日 | 1988-06-08 | 公开(公告)号 | EP0295564A3 | 公开(公告)日 | 1989-08-30 |
| 申请人 | Nadav, Seadia; | 发明人 | Nadav, Seadia; | ||||
| 摘要 | The invention relates to a whistling device (1) comprising a rigid thin plate (2) folded to form two segments having an acute angle between them. Each of the segments has an aperture (3) located substantially opposite the other aperture. The whistling device is adapted to be placed in the mouth and produce a shrill sound when air is blown therethrough. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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