Patent classifications
A
HUMAN NECESSITIES
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A46
BRUSHWARE
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A46B
BRUSHES
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11/00
Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
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A46B11/001
with integral reservoirs
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A46B11/002
pressurised at moment of use manually or by powered means
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A46B11/0024
with a permanently displaceable pressurising member that remain in position unless actuated, e.g. lead-screw or ratchet mechanisms, toothpaste tube twisting or rolling devices
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A46B11/0034
Means comprising a rachet mechanism or equivalent for advancing the piston stepwise
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