Inventor · disambiguated record
David Westergaard
Also filed as: WESTERGAARD DAVID · WESTERGAARD DAVID J · WESTERGAARD DAVID JEFFREY
8 granted patents·1 pending application·568 citations·filing 1990–2000
90Inventor score
Top patents by PatentIndex Score
9 records- 0191US5237511ADistribution automation smart remote terminal unitWESTRONIC INC·Filed 1990·Granted Aug 17, 1993·280 cites·29 claims
- 0278US6088362AKey telephone system without common controlNORTEL NETWORKS CORP·Filed 1998·Granted Jul 11, 2000·87 cites·8 claims
- 0377US5787115AKey telephone system without common controlNORTHERN TELECOM LTD·Filed 1995·Granted Jul 28, 1998·86 cites·16 claims
- 0463US5966432ARemote answering of doorbellNORTEL NETWORKS CORP·Filed 1997·Granted Oct 12, 1999·45 cites·62 claims
- 0563US5805687ASubscriber equipment muting method and apparatusNORTHERN TELECOM LTD·Filed 1996·Granted Sep 8, 1998·45 cites·12 claims
- 0650US6046995AKey telephone system without common controlNORTEL NETWORKS CORP·Filed 1998·Granted Apr 4, 2000·21 cites·5 claims
- 0734US2002123365A1Scalable base station architectureFiled 2000·Application pending·0 cites
- 0830US6072826AKey telephone system without common controlNORTEL NETWORKS CORP·Filed 1998·Granted Jun 6, 2000·1 cites·16 claims
- 0930US5768367AMethod and apparatus for removing FSK in-band signalingNORTHERN TELECOM LTD·Filed 1996·Granted Jun 16, 1998·3 cites·4 claims
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