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May 13 1999 | | Mitel Corporation | (assignment on the face of the patent) | | / |
Feb 15 2001 | Mitel Corporation | Mitel Knowledge Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011871 | /0001 |
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Apr 27 2005 | HIGHBRIDGE INTERNATIONAL LLC | Mitel Networks Corporation | SECURITY AGREEMENT | 016345 | /0236 |
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