REDFERN BROADBAND NETWORKS INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0161,235 WDM-to-switch interface unitAbandonedMar 24, 03Aug 19, 04[H04J]
2004/0052,519 Protected linear optical networkAbandonedDec 11, 01Mar 18, 04[H04B, H04J]
2004/0052,520 Path protection in WDM networkAbandonedFeb 07, 02Mar 18, 04[H04B, H04J]
2004/0052,521 Diagnostic monitoring system for WDM networksAbandonedApr 12, 02Mar 18, 04[H04B, H04J]
2004/0052,528 Jitter control in optical networkAbandonedMay 13, 02Mar 18, 04[H04B, H04J]
2004/0052,529 WDM transmission link designAbandonedFeb 15, 02Mar 18, 04[G02B, H04J]
2004/0047,283 FDM signals crosstalk cancellation techniqueAbandonedSep 10, 02Mar 11, 04[H04J]
2003/0223,749 Optical network managementAbandonedMay 31, 02Dec 04, 03[H04B]
2003/0223,761 Embedded operational channel network managementAbandonedMay 31, 02Dec 04, 03[H04B]
2003/0198,470 WDM assemblyAbandonedApr 23, 02Oct 23, 03[H04B]
2003/0025,966 OSP hardened WDM networkAbandonedAug 03, 01Feb 06, 03[G02B, H04J]
2002/0186,430 Communications networkAbandonedJun 12, 01Dec 12, 02[H04B, H04J]
2002/0180,957 Optical network hub structureAbandonedJun 01, 01Dec 05, 02[G01B, H04J]
2002/0181,037 Failure protection switching in optical networkAbandonedJun 01, 01Dec 05, 02[H04B, H04J]
2002/0181,047 Optical firewallAbandonedJun 01, 01Dec 05, 02[H04J]
2002/0178,245 Network element managementAbandonedMay 25, 01Nov 28, 02[G06F]
2002/0150,328 In-line hub amplifier structureAbandonedApr 12, 01Oct 17, 02[G02B]
2002/0141,720 Rack structureAbandonedApr 03, 01Oct 03, 02[G02B]
2002/0135,835 Optical traffic groomingAbandonedMar 06, 01Sep 26, 02[H04J]
2002/0126,709 DWDM networkAbandonedMar 06, 01Sep 12, 02[H04J]

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