Atlas Copco’s Q4 report Conference Call on February 2

Stockholm, January 20, 2005: Atlas Copco will publish its Q4 results on Wednesday, February 2 at approximately 12:00 PM CET. A conference call and a simultaneous presentation will take place at 3:00 PM CET / 9:00 AM EST.

The presentation will be held at the Operaterassen, Stockholm, Sweden. Participating from Atlas Copco will be Gunnar Brock, President and CEO and Hans Ola Meyer, CFO. The meeting will begin with a short presentation of the report followed by a question and answer session. The conference call will be broadcasted live via the Internet. Please see our website for link, handout and further details. If you wish to participate at the presentation, please register before February 1: www.atlascopco-group.com/ir To help ensure that the conference call begins in a timely manner, please dial in 5-10 minutes prior to the scheduled start time. Dial-in number +44 (0)20 7784 1014 Replay-number +44 (0)20 7984 7578 Code 4497807# The replay is available for two days. We look forward to your participation. Mattias Olsson Investor Relations Manager