[Class : 7] Machines And Machine Tools, Including Equipment For Emptying, Pressure Testing, Cleaning (Washing), Marking, Painting And Renovation (Reshaping) Of Gas Cylinders; Shrinking Machines For Sealing Of Gas Valves And Gas Cylinders; Motors And Engines (Except For Land Vehicles); Machine Couplings And Transmission Components (Except For Land Vehicles); Gas Filling Plants For Gas Cylinders And Machines For Filling Of Gas Cylinders, And Parts And Accessories Hereto (Not Included In Other Classes), Including Suspension Chains, Lifting Devices For Gas Cylinders And Filling Heads With Gas Stop Valves; Machines For Testing Of Leakages And Leakiness Of Valves, Including Valves On Gas Cylinders, And For Testing Leakages Of Gas Cylinders; Apparatus And Instruments For Sealing Of Gas Cylinders