79053107
Dec 4, 2007
Dec 1, 2009
Heat exchangers being parts of machines and their accessories and spare parts, namely, plates, tubes, inlets, outlets, casings, fittings, pipings
Machinery[ Heat exchangers not being parts of machines, heat pumps and their accessories and spare parts, namely, plates, tubes, inlets, outlets, casings, fittings, pipings ]
Environmental Control Apparatus