Assignee
WHEELOCK INC
US·40 granted patents·1,102 citations·filing 1988–2009
Top patents by PatentIndex Score
40 records- 0192US6462665B1Method and apparatus for sending a weather condition alertWHEELOCK INC·Filed 2000·Granted Oct 8, 2002·182 cites·14 claims
- 0286US5608375ASynchronized visual/audible alarm systemWHEELOCK INC·Filed 1995·Granted Mar 4, 1997·85 cites·50 claims
- 0383US7663500B2Method and apparatus for providing a notification appliance with a light emitting diodeWHEELOCK INC·Filed 2005·Granted Feb 16, 2010·12 cites·24 claims
- 0482US5751210ASynchronized video/audio alarm systemWHEELOCK INC·Filed 1997·Granted May 12, 1998·59 cites·11 claims
- 0581USD315112SAlarm signal coverWHEELOCK INC·Filed 1988·Granted Mar 5, 1991·20 cites·1 claims
- 0678US7403096B2Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2006·Granted Jul 22, 2008·9 cites·34 claims
- 0778US5684467AUniversal mounting plate for audible-visual alarmsWHEELOCK INC·Filed 1995·Granted Nov 4, 1997·58 cites·28 claims
- 0878US5121033AStrobe circuit utilizing optocoupler in DC-to-DC converterWHEELOCK INC·Filed 1990·Granted Jun 9, 1992·41 cites·5 claims
- 0977US5341069AMicroprocessor-controlled strobe lightWHEELOCK INC·Filed 1993·Granted Aug 23, 1994·36 cites·25 claims
- 1075US6369696B2Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2001·Granted Apr 9, 2002·20 cites·48 claims
- 1174US5400009ASynchronization circuit for visual/audio alarmsWHEELOCK INC·Filed 1993·Granted Mar 21, 1995·48 cites·24 claims
- 1272US5128591AStrobe alarm circuitWHEELOCK INC·Filed 1991·Granted Jul 7, 1992·40 cites·13 claims
- 1371US6311021B1Multi-candela alarm unitWHEELOCK INC·Filed 1999·Granted Oct 30, 2001·45 cites·20 claims
- 1470US8026828B2Method and apparatus for providing a notification appliance with a light emitting diodeWHEELOCK INC·Filed 2009·Granted Sep 27, 2011·3 cites·20 claims
- 1570US8026829B2Method and apparatus for providing a notification appliance with a light emitting diodeWHEELOCK INC·Filed 2009·Granted Sep 27, 2011·3 cites·16 claims
- 1670US7079011B2Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2005·Granted Jul 18, 2006·4 cites·15 claims
- 1770US5969627AAudible and audible-visible alarms with interchangeable coverWHEELOCK INC·Filed 1998·Granted Oct 19, 1999·41 cites·24 claims
- 1869US5982275ASynchronized video/audio alarm systemWHEELOCK INC·Filed 1998·Granted Nov 9, 1999·31 cites·73 claims
- 1969US5805071AUniversal mounting plate for audible-visual alarmsWHEELOCK INC·Filed 1997·Granted Sep 8, 1998·38 cites·53 claims
- 2068US6583718B2Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2002·Granted Jun 24, 2003·13 cites·8 claims
- 2167US6906616B1Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2003·Granted Jun 14, 2005·11 cites·22 claims
- 2267USRE38183ESynchronization circuit for visual/audio alarmsWHEELOCK INC·Filed 1997·Granted Jul 15, 2003·38 cites·47 claims
- 2367US4967177AAudiovisual signaling device and methodWHEELOCK INC·Filed 1989·Granted Oct 30, 1990·31 cites·24 claims
- 2466USD374635SCover for an audible-visual alarmWHEELOCK INC·Filed 1995·Granted Oct 15, 1996·14 cites·1 claims
- 2565US7907047B2Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 2008·Granted Mar 15, 2011·2 cites·35 claims
- 2665US6271763B1Audible and audible-visible alarms with interchangeable coverWHEELOCK INC·Filed 1999·Granted Aug 7, 2001·32 cites·49 claims
- 2764US6411201B1Strobe alarm with strobe intensity selector switchWHEELOCK INC·Filed 1999·Granted Jun 25, 2002·32 cites·23 claims
- 2861US6194994B1Apparatus and method for synchronizing visual/audible alarm units in an alarm systemWHEELOCK INC·Filed 1998·Granted Feb 27, 2001·22 cites·22 claims
- 2955US5673030AZero inrush alarm circuitWHEELOCK INC·Filed 1996·Granted Sep 30, 1997·20 cites·15 claims
- 3053US7428311B2Method and apparatus for boosting an audible signal in a notification systemWHEELOCK INC·Filed 2002·Granted Sep 23, 2008·6 cites·36 claims
- 3153US5475361AStrobe warning lightWHEELOCK INC·Filed 1993·Granted Dec 12, 1995·19 cites·16 claims
- 3251US5347259AStrobe warning lightWHEELOCK INC·Filed 1993·Granted Sep 13, 1994·18 cites·12 claims
- 3351US5293155AInterface for a supervised multi-input audible warning systemWHEELOCK INC·Filed 1991·Granted Mar 8, 1994·26 cites·23 claims
- 3450US7830252B2Method and apparatus for providing an ASIC controlled alarm unitWHEELOCK INC·Filed 2003·Granted Nov 9, 2010·3 cites·4 claims
- 3545US6217196B1Strobe light systemWHEELOCK INC·Filed 1998·Granted Apr 17, 2001·14 cites·23 claims
- 3634US5213411AStrobe lightWHEELOCK INC·Filed 1991·Granted May 25, 1993·7 cites·8 claims
- 3732USRE35837EMicroprocessor-controlled strobe lightWHEELOCK INC·Filed 1996·Granted Jul 7, 1998·3 cites·25 claims
- 3832US5432294AElectronic bell tone generatorWHEELOCK INC·Filed 1993·Granted Jul 11, 1995·6 cites·5 claims
- 3930US5446349AStrobe circuit utilizing optocoupler in DC-to-DC converterWHEELOCK INC·Filed 1994·Granted Aug 29, 1995·8 cites·6 claims
- 4027US4970490AMotor bell alarmWHEELOCK INC·Filed 1990·Granted Nov 13, 1990·2 cites·10 claims
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