Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B05
SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
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B05B
SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
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11/00
Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
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B05B11/01
characterised by the means producing the flow
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B05B11/02
Membranes or pistons acting on the contents inside the container, e.g. follower pistons
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B05B11/028
Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
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B05B11/029
located on top of the remaining content
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