Inventor · disambiguated record
Douglas A. Spencer
Also filed as: SPENCER DOUGLAS · SPENCER DOUGLAS A
17 granted patents·4 pending applications·1,396 citations·filing 1981–2011
96Inventor score
Files withAT & T BELL LAB7AVAYA TECHNOLOGY CORP3LUCENT TECHNOLOGIES INC2AMERICAN TELEPHONE & TELEGRAPH1AT & T CORP1
Top patents by PatentIndex Score
21 records- 0196US5184347AAdaptive synchronization arrangementAT & T BELL LAB·Filed 1991·Granted Feb 2, 1993·223 cites·46 claims
- 0294US5305308AWireless access telephone-to-telephone network interface architectureAT & T BELL LAB·Filed 1992·Granted Apr 19, 1994·327 cites·33 claims
- 0390US8342796B2Damping systems for use in enginesHONEYWELL INT INC·Filed 2008·Granted Jan 1, 2013·30 cites·13 claims
- 0487US5278892AMobile telephone system call processing arrangementAT & T BELL LAB·Filed 1993·Granted Jan 11, 1994·189 cites·63 claims
- 0586US5982783ASwitch distribution via an intermediary switching networkLUCENT TECHNOLOGIES INC·Filed 1997·Granted Nov 9, 1999·100 cites·30 claims
- 0686US5195090AWireless access telephone-to-telephone network interface architectureAT & T BELL LAB·Filed 1991·Granted Mar 16, 1993·161 cites·57 claims
- 0784US8035374B1Pipe stress detection tool using magnetic barkhausen noiseMICROLINE TECHNOLOGY CORP·Filed 2008·Granted Oct 11, 2011·34 cites·33 claims
- 0884US4488294AEstablishing and supporting data traffic in private branch exchangesAT & T BELL LAB·Filed 1982·Granted Dec 11, 1984·55 cites·9 claims
- 0983US4894822AFast packetized data delivery for digital networksAMERICAN TELEPHONE & TELEGRAPH·Filed 1987·Granted Jan 16, 1990·72 cites·41 claims
- 1083US4398287ADigital switching over PAM bus systemBELL TELEPHONE LABOR INC·Filed 1981·Granted Aug 9, 1983·31 cites·9 claims
- 1182US8596417B2Lubrication systems with nozzle blockage detection systemsBARRETT RICH·Filed 2011·Granted Dec 3, 2013·16 cites·17 claims
- 1279US5195091AAdaptive synchronization arrangementAT & T BELL LAB·Filed 1991·Granted Mar 16, 1993·124 cites·42 claims
- 1356US7180869B2Comprehensive echo control systemAVAYA TECHNOLOGY CORP·Filed 2001·Granted Feb 20, 2007·3 cites·48 claims
- 1452US5862131AHybrid time-slot and sub-time-slot operation in a time-division multiplexed systemLUCENT TECHNOLOGIES INC·Filed 1996·Granted Jan 19, 1999·13 cites·12 claims
- 1551US6674853B1Integration of remote access and serviceAVAYA TECHNOLOGY CORP·Filed 2000·Granted Jan 6, 2004·3 cites·12 claims
- 1648US2011241397A1Portable swing seatSPENCER DOUGLAS A·Filed 2011·Application pending·0 cites
- 1745US2003081756A1Multi-detector call classifierFiled 2001·Application pending·0 cites
- 1843US4510596ATime slot assignment facilitiesAT & T BELL LAB·Filed 1982·Granted Apr 9, 1985·8 cites·30 claims
- 1942US2003088403A1Call classification by automatic recognition of speechCHAN NORMAN C·Filed 2001·Application pending·0 cites
- 2041US2003120923A1Secure data authentication apparatusAVAYA TECHNOLOGY CORP·Filed 2001·Application pending·0 cites
- 2134US5521903APort system for interfacing digital PBX to digital transmission facilityAT & T CORP·Filed 1993·Granted May 28, 1996·7 cites·14 claims
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