D
SECTION D — TEXTILES
;
PAPER
PAPER
D21
PAPER-MAKING
;
PRODUCTION OF CELLULOSE
D21B
FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
P:0
D21B 1/00
Fibrous raw materials or their mechanical treatment
(breaking-up or cutting wood or the like by dry methods
Fulltext...
Hierarchy...
Expanded...
B27L
; obtaining fibres mechanically for spinning from rags, peat, or the like
Fulltext...
Hierarchy...
Expanded...
D01B
; beaters
Fulltext...
Hierarchy...
Expanded...
D21D 1/00
)