4
Industrial oils and greases; Lubricants; Dust absorbing, wetting and binding compositions; Fuels (including motor spirit) and illuminants; Candles and wicks for lighting
7
Machines for vacuum and high-vacuum technology; Vacuum control valves [parts of engines]; Fittings for vacuum pumps; Sealing joints [parts of engines]; Sealing joints [parts of machines]; Mechanical seals [machine parts]
9
Electric apparatus and instruments for vacuum installations for leak testing (included in class 9); Leak testing equipment and installations; Leak testing systems; Vacuum gauges; Testing apparatus not for medical purposes; Vacuum and high-vacuum installations for testing, analysing and precision measurement of research products or industrial products
17
Gaskets of elastomers; Gas-, liquid- and vapour-impermeable sealing material of elastomer; Insulation cuffs, sealing rings, membranes of elastomer; Flexible pipes and flexible pipe connectors of elastomer; Conduits of elastomer for connecting lines through partitions; Flexible gas pipes of elastomer for conducting and guiding gases; Valves of elastomer; Flexible vacuum pipes of elastomer for connecting vacuumed spaces; Flexible pipes, coatings and cast articles of elastomer for connecting and sealing purposes; Parts and fittings for all the aforesaid goods, included in class 17