EMERGENCY WARNING SYSTEMS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6938416 Aircraft with shape memory alloys for retractable landing gearExpiredDec 22, 03Sep 06, 05[0000]
6915633 Shape memory alloy actuators for use with repetitive motion devicesExpiredDec 22, 03Jul 12, 05[F01B]
6796124 Shape memory alloy actuators for aircraft landing gearExpiredFeb 11, 02Sep 28, 04[F01B]
6367253 Shape memory alloy actuators for aircraft landing gearExpiredJan 19, 01Apr 09, 02[F01B]
6273038 Rotary distribution system internal combustion engineExpiredJan 19, 99Aug 14, 01[F01L]
6226992 Heat converter engine using a shape memory alloy actuatorExpiredDec 20, 99May 08, 01[F01B]
6229438 Vehicular hazard warning systemExpiredApr 19, 00May 08, 01[B60Q]
6081188 Vehicular hazard warning systemExpiredJun 08, 98Jun 27, 00[B60Q]

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