ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F28F0021020000 of carbon, e.g. graphite 1
F28F0021040000 of ceramic; of concrete; of natural stone 1
F28F0021060000 of plastics material 1
F28F0021080000 of metal 1
F28F0023000000 Features relating to the use of intermediate heat-exchange materials, e.g. selection of compositions 1
F28F0023020000 Arrangements for obtaining or maintaining same in a liquid state 1
F28F0025000000 Component parts of trickle coolers (arrangements for increasing heat transfer F28F0013000000; controlling arrangements F28F0027000000) 1
F28F0025020000 for distributing, circulating, or accumulating liquid (spraying or atomising in general B05B, B05D) 1
F28F0025040000 Distributing or accumulator troughs 1
F28F0025060000 Spray nozzles or spray pipes 1
F28F0025080000 Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface (packing elements in general B01J0019300000, B01J0019320000) 1
F28F0025100000 for feeding gas or vapour 1
F28F0025120000 Ducts; Guide vanes, e.g. for carrying currents to distinct zones 1
F28F0027000000 Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus 1
F28F0027020000 for controlling the distribution of heat-exchange media between different channels (arrangements of guide plates or guide vanes F28F0009220000, F28F0025120000) 1