IPC 2013 : D04B 15/72 : in straight-bar knitting machines.

IPC2013 > D > D04 > D04B > D04B 15/00 > D04B 15/72[3] > in straight-bar knitting machines.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
D SECTION D — TEXTILES; PAPER.
D04 BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS.
D04B KNITTING.
D04B 15/00 Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind (details or auxiliary devices not so restricted D04B 35/00).
D04B 15/72 · · · in straight-bar knitting machines.