Atlas Copco’s Q1 report Conference Call, April 27

Stockholm, April 13, 2004: Atlas Copco will publish its Q1 results on Wednesday, April 27 at approximately 12 PM CET. A conference call will be held at 3:00 PM CET / 9:00 AM EST.

Participating from Atlas Copco will be Gunnar Brock, President and CEO, and Hans Ola Meyer, CFO. The conference call 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 the Investor Relations section of our website for handout and further details: 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 7784 1024 Code 9028496# The replay is available for two days. We look forward to your participation. Mattias Olsson Investor Relations Manager