Locarno Class 23

FLUID DISTRIBUTION EQUIPMENT, SANITARY, HEATING, VENTILATION AND AIR-CONDITIONING EQUIPMENT

Name: Anna University Journal List 2026
Creator: Citrine
License: https://creativecommons.org/licenses/by/4.0/

Systems and equipment for water, gas, heating, and climate control

Subclasses (8)

Subclass	Description	Common Examples
23-01	Fluid distribution equipment	Pipes, faucets, valves, rain gutters
23-02	Sanitary appliances	Toilets, bathtubs, sinks, showers
23-03	Heating equipment	Furnaces, heating boilers, radiators
23-04	Ventilation and air conditioning equipment	Air conditioners, ventilation fans
23-05	Solid fuel	Stoves, fireplaces
23-06	Water tanks and cisterns	Water storage tanks, cistern designs
23-07	Sewage and waste water apparatus	Septic systems, treatment equipment
23-99	Miscellaneous	Other fluid/sanitary equipment

Source: Locarno Classification (13th Edition). Always refer to the official WIPO website for legal purposes.