IPC 2013 : D03C 15/02 : Chains of metal, wood, or similar material with projecting pattern-indicating elements.

IPC2013 > D > D03 > D03C > D03C 15/00 > D03C 15/02[1] > Chains of metal, wood, or similar material with projecting pattern-indicating elements.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D SECTION D — TEXTILES; PAPER.
D03 WEAVING.
D03C SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS.
D03C 15/00 Pattern cards or chains.
D03C 15/02 · Chains of metal, wood, or similar material with projecting pattern-indicating elements.