CASE HUB ARCHIVED–this archived case hub reflects the position at the date of the decision of 29 June 2015; it is no longer maintained. See further, timeline. Case facts Outline European Commission merger investigation into the planned acquisition by Siemens of Dresser-Rand (Dresser) (M.7429). The transaction involves horizontal overlaps in the supply of turbo compressors in the market for oil and gas distribution. The Commission unconditionally cleared the transaction after a phase II investigation on 29/06/2015. Latest developments On 29 June 2015, the Commission cleared the merger unconditionally following a phase II investigation. Parties Siemens and DresserSiemens is a German-based public listed company headquartered in Munich. It offers a range of electrical products and services to customers through a number of business divisions. In relation to this acquisition, Siemens' product portfolio includes gas turbines, steam turbines, generators and compressors. Siemens also produces electric motors. Dresser is a US-based company headquartered in Houston, Texas.