Assignee
LIFELINE SYSTEMS INC
US·27 granted patents·1,278 citations·filing 1974–1999
Top patents by PatentIndex Score
27 records- 0195US4524243APersonal alarm systemLIFELINE SYSTEMS INC·Filed 1983·Granted Jun 18, 1985·142 cites·42 claims
- 0291US4622544ALow battery indicatorLIFELINE SYSTEMS INC·Filed 1985·Granted Nov 11, 1986·171 cites·9 claims
- 0389US4491970APortable transmitter for emergency alarm system having watertight enclosureLIFELINE SYSTEMS INC·Filed 1982·Granted Jan 1, 1985·98 cites·7 claims
- 0488USD277465SPortable emergency alarm transmitterLIFELINE SYSTEMS INC·Filed 1983·Granted Feb 5, 1985·26 cites·1 claims
- 0587US4064368AClosed-loop emergency alarm and response systemLIFELINE SYSTEMS INC·Filed 1976·Granted Dec 20, 1977·43 cites·3 claims
- 0686US3989900AAutomatic telephone alarm systemLIFELINE SYSTEMS INC·Filed 1974·Granted Nov 2, 1976·42 cites·1 claims
- 0784US4686697ATelephone care system with telephone line-checkingLIFELINE SYSTEMS INC·Filed 1983·Granted Aug 11, 1987·74 cites·4 claims
- 0883US4760593APersonal alarm system providing handsfree operationLIFELINE SYSTEMS INC·Filed 1986·Granted Jul 26, 1988·79 cites·11 claims
- 0981USD338844SPersonal security alarmLIFELINE SYSTEMS INC·Filed 1992·Granted Aug 31, 1993·24 cites·1 claims
- 1081US5128979AMonitored personal emergency response systemLIFELINE SYSTEMS INC·Filed 1991·Granted Jul 7, 1992·98 cites·14 claims
- 1179USD333996SPersonal security alarmLIFELINE SYSTEMS INC·Filed 1991·Granted Mar 16, 1993·22 cites·1 claims
- 1278US4656319AAlarm system testerLIFELINE SYSTEMS INC·Filed 1985·Granted Apr 7, 1987·62 cites·12 claims
- 1376USD313362SWireless communicator for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Jan 1, 1991·17 cites·1 claims
- 1474US5159317ASystem and method for remote telephonic station actuationLIFELINE SYSTEMS INC·Filed 1991·Granted Oct 27, 1992·57 cites·5 claims
- 1570USD313363SHome communicator for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Jan 1, 1991·13 cites·1 claims
- 1669US4884060AMulti-state selection switch for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Nov 28, 1989·35 cites·16 claims
- 1768US5210784AAdaptive speakerphone systemLIFELINE SYSTEMS INC·Filed 1991·Granted May 11, 1993·46 cites·5 claims
- 1867US5162776AEmergency service apparatus and methodLIFELINE SYSTEMS INC·Filed 1991·Granted Nov 10, 1992·58 cites·5 claims
- 1963USD372435SCommunicator for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1995·Granted Aug 6, 1996·13 cites·1 claims
- 2063US5333171AAdaptive speakerphone systemLIFELINE SYSTEMS INC·Filed 1993·Granted Jul 26, 1994·35 cites·8 claims
- 2160US4908602AApparatus and method of testing a portable held button for emergency response systemLIFELINE SYSTEMS INC·Filed 1989·Granted Mar 13, 1990·32 cites·14 claims
- 2259US4884059AApparatus and method for reporting verification testing of a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1988·Granted Nov 28, 1989·18 cites·16 claims
- 2357US6504908B1Reminder phoneLIFELINE SYSTEMS INC·Filed 1999·Granted Jan 7, 2003·33 cites·19 claims
- 2453US5091930AEnhancement of a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1990·Granted Feb 25, 1992·23 cites·14 claims
- 2552US4565902ATelephone care system with supplementary alarm messageLIFELINE SYSTEMS INC·Filed 1983·Granted Jan 21, 1986·9 cites·10 claims
- 2646USD338843SHome communicator for a personal emergency response systemLIFELINE SYSTEMS INC·Filed 1991·Granted Aug 31, 1993·6 cites·1 claims
- 2728US5228079AMethod and apparatus for pulse/tone detection and selectionLIFELINE SYSTEMS INC·Filed 1991·Granted Jul 13, 1993·2 cites·11 claims
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