Toothbrush having counter-rotating heads
US7316044B1 · kind B1 · utility
3Cited by
15References
1Claims
0Family size
Inventors
Key dates
| Filing date | Oct 13, 2005 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Jun 16, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C17/3418
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electric toothbrush has bristle heads that rotate counter to each other. The toothbrush operates from a battery stored in the handle section of the toothbrush.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.