Siemens Financial Services OSRAM GmbH - lighting manufacturer, sells under Sylvania- and OSRAM- brands. OSRAM SYLVANIA Inc. - US subsidiary; sells lights of various kinds Roke Manor Research Limited - Contract research and development in electronic sensors, communications and networks. Siemens Airfield Solutions, Inc. - makers of lights for most airports, worldwide; also acts as top level contractor for airport projects Siemens Building Technologies Ltd. - building automation, security systems Siemens Business Services Media Holdings Ltd. Siemens Corporation Siemens Building Technologies Siemens Healthineers Acuson Corporation - ultrasound devices CTI PET Systems, Inc. Siemens Energy & Automation, Inc. Siemens Industrial Solutions and Services Group Siemens Information and Communications Siemens Telecommunication Services GmbH Siemens Enterprise Communications - joint venture with The Gores Group Siemens Technology and Services Private Limited Siemens Subscriber Networks, Inc. Nokia Siemens Networks - joint venture with Nokia, is one of the largest telecommunications solutions suppliers in the world. Symbian Ltd. Strowger Telecommunication GmbH Tri-global Solutions Group Inc. Siemens Milltronics Process Instruments Inc. Siemens Oil & Gas Siemens Power Generation Group New Energy Associates, LLC Siemens Wind Power Siemens Power Transmission and Distribution Group Siemens Transportation Systems Group Oxford OMT References List of Siemens subsidiaries and associated companies Profiles of Siemens subsidiaries and affiliates Siemens Announces Agreement to Acquire Dresser-Rand See also Lists of corporate assets Siemens Siemens Economy of Germany-related lists