D21D - CPC Classification Index

ClassID:

126454 ⎘

D21D - CPC Classification

Classification description:

Sub-classes:

D21D1/00 » Methods of beating or refining; Beaters of the Hollander type 17
D21D5/00 » Purification of the pulp suspension by mechanical means; Apparatus therefor 16
D21D99/00 » Subject matter not provided for in other groups of this subclass 16