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Lam Research Corporation Announces Live Webcast of Upcoming Investor Conference
February 15, 2005

FREMONT, Calif., February 15, 2005--Lam Research Corporation (Nasdaq: LRCX), Fremont, Calif., today announced that the Company's presentation at the Goldman Sachs Technology Investment Symposium 2005 (Phoenix, AZ), scheduled for 3:30 p.m. Mountain Time on February 23, 2005, will be available to the public via webcast.

The live webcast and the replay can be accessed from Lam's web site at www.lamrc.com. A replay of the webcast will be available for two weeks.

The dates and time are subject to change. Please visit the Investors section of Lam's web site and select the Calendar/Webcasts button to view the latest presentation schedule, or select the Email Alerts button to register your email address to receive automated notifications of upcoming webcasts, news releases, and SEC filings.

Lam Research Corporation is a major supplier of wafer fabrication equipment and services to the world's semiconductor industry. Lam's common stock trades on the Nasdaq National Market under the symbol LRCX. The Company's World Wide Web address is http://www.lamrc.com.

Lam Research Corporation Contact:
Julie Cimino, Investor Relations, phone: 510/572-1615, e-mail: julie.cimino@lamrc.com

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