FIELD: hygienic accessories. SUBSTANCE: tooth-brush is furnished with an audio-signal generator provided with a tone control that varies the generator tonality, depending on the cleaning motions performed. EFFECT: enhanced convenience in use. 4 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TOOTH BRUSH | 1992 |
|
RU2048137C1 |
| TOOTH-BRUSH | 1990 |
|
RU2032368C1 |
| TOOTH BRUSH | 1992 |
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RU2048142C1 |
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RU2066968C1 |
| TOOTH-BRUSH | 1992 |
|
RU2043056C1 |
