German Patents
German Patent 1 German Patent 2 German Patent 3 German Patent 4 German Patent 5

Method for continuously recycling by sand during cleaning pipes

 

Systems for repairing buried pipes

 

Systems for repairing buried pipes II

 

Systems for inspecting and repairing pipes and sewers

 

Device for repairing pipe connecting pieces

 
EU Patents
EU Patent 1   EU Patent 2   EU Patent 3   EU Patent 4    
Device for repairing underground pipelines   Device for repairing sewers pipes or similar and use of such device   Method of repairing underground pipelines   Method and device for cleaning sewers continuously    
 
US Patents
US Patent 1   US Patent 2            
Device for repairing underground sewers   Apparatus for repairing buried pipes