FIELD: cleansing of teeth. SUBSTANCE: bristle-carrier 4 is mounted in head 3 by means of annular groove 8 in such a manner, that selected part 6 with bristles or massage part 7 be disposed at the center of groove 3. EFFECT: improved efficiency of cleaning. 3 dwg
| Title | Year | Author | Number |
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| TOOTH BRUSH | 1992 |
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