Brush filaments

Details Brush filaments Brush filaments

A - Human Necessities

46

B

15/108, 15/109,

A46B 15/00 (2006.01) A46D 1/00 (2006.01)

Patent

CA 1297241

ABSTRACT Novel, improved filaments for brushes. The filaments include a colored region provided by a dye colorant and the colored region is adapted to provide a color intensity which can change in response to increased use of the filament to provide a signal indicative of filament wear. The filaments are particularly useful in toothbrushes.

572885

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