IPC 2013 : D06F 75/04 : by pre-heated block.

IPC2013 > D > D06 > D06F > D06F 75/00 > D06F 75/04[2] > by pre-heated block.
Notes[t] D01 - D07: TEXTILES OR FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
Notes[g] D06F 61/00 - D06F 85/00: Ironing; Pressing
D SECTION D — TEXTILES; PAPER.
D06 TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR.
D06F LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES (apparatus for blocking, pressing, steaming, or stretching hats A42C; treating textile materials by liquids, gases or vapors D06B; chemical matters, see D06L, D06M).
D06F 75/00 Hand irons.
D06F 75/04 · · by pre-heated block.