[Class : 6] Bearing Metal, Metal Pipe Connectors, Metal Support Structures As Far As They Are Included In Class 6.[Class : 7] Machine Bearings, In Particular, Antifriction Bearings For Machines, Bearings For Machine Components, Sleeve Bearings, Bearing Cups And Parts For Bearings As Far As They Are Included In Class 7.[Class : 37] Repair, Maintenance And Installation Services For Machine Bearings, Bearings For Machine Components, Sleeve Bearings, Bearing Cups And Parts For Bearings As Far As They Are Included In Class 37; Execution Of Performance Enhancing Modifications For The Modernisation Of Machine Bearings, Bearings For Machine Components, Sleeve Bearings, Bearing Cups And Parts For Bearings As Far As They Are Included In Class 37.