IPC 2013 : D01B 7/02 : Cleaning or classifying silk cocoons.

IPC2013 > D > D01 > D01B > D01B 7/00 > D01B 7/02[1] > Cleaning or classifying silk cocoons.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D SECTION D — TEXTILES; PAPER.
D01 NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING.
D01B MECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OR FILAMENTS, e.g. FOR SPINNING (crude extraction of asbestos fibres from ores B03B; apparatus for retting D01C).
D01B 7/00 Obtaining silk fibres or filaments.
D01B 7/02 · Cleaning or classifying silk cocoons.