[Class : 6] Water Storage Apparatus Namely Metal Vats For Storing Liquids And Compressed Air; Storage Apparatus For Compressed Air Namely Metal Vats For Storing Compressed Air.[Class : 7] Machines For Storage And Restitution Of Electric Energy By Means Of Compressed Air Namely Rotating Machines, Compressors, Turbines (Other Than For Motor Vehicles), Turbo Compressors, Pumps (Machines); Compressed Air Machines.[Class : 9] Apparatus And Instruments For Conducting, Switching, Transforming, Accumulating, Regulating Or Controlling Electricity.[Class : 11] Water Distribution Apparatus, Heat Pumps.[Class : 42] Evaluation, Assessments, Research And Reports In The Fields Of Science And Technology Namely Surveying (Work) Provided By Engineers; Engineering Services, Technical Project Study And Calculation Services (Engineering Services) In The Field Of Energy.