Operating card for mobile telephone may hold more than 100 separate numbers with their own ringing tone, alphanumeric display, separate mailboxes, transmission and billing functions
DE10000488A1
Production of drinking-quality water involving simultaneous conversion of nitrate to nitrogen and water purification using oxygen/ozone mixture
DE10000487A1
Plant and process for converting ammonium and/or ammonia into elemental nitrogen, useful for purifying water and making it hygienic for swimming, uses specified pH and mixture of oxygen, ozone and/or nitrogen oxide
