FIELD: hygiene. SUBSTANCE: device has head 1 with bristle 2, neck 3 and handle. The handle has two threadedly connected parts. The handle has casing 3 and crimped surface. The casing is mounted between the handle parts to provide for changing the distance between the crimps upon changing the distance between the handle parts. EFFECT: enhanced effectiveness in cleaning teeth. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TOOTH BRUSH | 1992 |
|
RU2039504C1 |
| TOOTH-BRUSH | 1992 |
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| TOOTH-BRUSH | 1992 |
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