IPC 2013 : E03D 9/12 : Means to prevent freezing of lavatories.

IPC2013 > E > E03 > E03D > E03D 9/00 > E03D 9/12[1] > Means to prevent freezing of lavatories.
Notes[t] E01 - E06: BUILDING
E SECTION E — FIXED CONSTRUCTIONS.
E03 WATER SUPPLY; SEWERAGE.
E03D WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR.
E03D 9/00 Sanitary or other accessories for lavatories (hand tools for cleaning the toilet bowl A47K 11/10; seats or covers for closets A47K 13/00; body supports, other than seats, for closets A47K 17/02; devices for preventing contamination of drinking-water pipes E03C 1/10).
E03D 9/12 · Means to prevent freezing of lavatories.