ICOS Vision Systems Announces Date of First Quarter Results HEVERLEE, Belgium, April 20 /PRNewswire/ -- ICOS Vision Systems Corporation NV (Nasdaq: IVIS; Euronext), a world leader in vision solutions, will issue a press release announcing its first-quarter results at approximately 2:00 a.m. EDT/8:00 a.m. Belgium time on Tuesday, April 27, 2004. A conference call has been scheduled for 9:00 a.m. EDT/3:00 p.m. Belgium time that same day. To access the conference call, please dial +1-706-634-1030 at least 10 minutes prior to the call. A live webcast of the conference call will also be available in the Investor section of the ICOS Vision Systems website, http://www.icos.be/. On the call, Anton DeProft, president and chief executive officer, will review the financial results for the quarter ended March 31, 2004, after which he will be available for questions from the investment community. A replay of the call will be available from 12:00 noon EDT/6:00 p.m. Belgium Time on April 27 through 11:59 p.m. EDT May 4/5:59 a.m. Belgium Time on May 5. To access the replay, please dial +1-800-642-1687 (international callers dial +1-706-645-9291), conference ID number 6862958. Also, an archived replay of the conference webcast will be available on the ICOS website for 90 days. ICOS is a leading worldwide developer and supplier of inspection equipment for the semiconductor packaging industry. The company believes to have the most comprehensive line of 2D and 3D inspection solutions for its target markets. ICOS has three product lines: its stand-alone inspection equipment performs the final outgoing inspection and taping of various types of semiconductor components and its board-level and system-level OEM inspection systems are integrated at various stages of the semiconductor packaging process and in electronic assembly equipment. ICOS' headquarters are located in Heverlee, Belgium and it has R&D centers in Belgium, Germany and Hong Kong and sales and support offices in Japan, the USA, Singapore and Hong Kong. ICOS Vision Systems Corporation NV can be found on the World Wide Web at http://www.icos.be/ Contact: Investor Relations Jody Burfening/Carolyn Capaccio ICOS Vision Systems Corporation NV Lippert/Heilshorn & Associates, Inc. Tel: 32 16 398 220 212-838-3777 or DATASOURCE: ICOS Vision Systems Corporation NV CONTACT: Investor Relations of ICOS Vision Systems Corporation NV, +32-16-398-220, ; or Jody Burfening, , or Carolyn Capaccio, , both of Lippert- Heilshorn & Associates, Inc., +1-212-838-3777, for ICOS Vision Systems Corporation NV Web site: http://www.icos.be/

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