D21B

Watch

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Description

FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT

Subclasses

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Subclass Title
1/00 Fibrous raw materials or their mechanical treatment (beaters D21D 1/00)
1/02 Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) Pretreatment of the raw materials by physical or chemical means (removal of bark B27L)
1/04 Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B)
1/06 Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B) by dry methods
1/08 Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B) by dry methods the raw material being waste paper (chemical part D21C 5/02); the raw material being rags

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