Clock synchronization mechanism in a time division multiplexing circuit emulation system

ATRICA ISRAEL, LTD.

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RELEASE OF SECURITY INTEREST Recorded 2008-01-09

SPVC VI, LLC, GUNNALLEN VENTURE PARTNERS X-A, LLC, JK&B CAPITAL FUND IV, L.P., JK&B CAPITAL FUND IV, Q.I.P., BENHAMOU GLOBAL INVESTORS, LLC, LITUNG VENTURE CAPITAL CORPORATION, INNOVACOM 4, CADOGAN, WILLIAM J., GEMINI ISRAEL III LP, GEMINI ISRAEL III OVERFLOW FUND L.P., GEMINI ISRAEL III PARALLEL FUND L.P., GEMINI PARTNER INVESTORS L.P., RANDOLPH ASSOCIATES, LEGEND VENTURES I, L.P., RANDOLPH STREET PARTNERS V, HSP MULTIPLE STRATEGY FUND LLC, TOMASETTA FAMILY PARTNERSHIP LP, WAVELAND TECHNOLOGY PARTNERS, L.P., IRA DEHYIMY C/O VITESSE SEMICONDUCTOR CORP., THE CHALLENGE FUND-ETGAR II, LP

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SECURITY AGREEMENT Recorded 2007-07-03

ATRICA IRELAND LIMITED

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RELEASE OF SECURITY INTEREST Recorded 2006-01-17

VENTURE LENDING & LEASING III, INC.

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CORRECTION TO THE SPELLING OF THE CONVEYING PARTY Recorded 2003-06-16

VENTURE LENDING & LEASING III, INC.

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SECURITY INTEREST Recorded 2002-12-30