LandOfFree - US Patents - Listing for Communications, electrical: acoustic wave systems and devices,Receiver circuitry

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Seismic parameter measurement method and apparatus

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Seismic-acoustic detection device

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Seismic-acoustic low-flying aircraft detector

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Seismo-acoustic detection, identification, and tracking of steal

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Selective proximity detector

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Side looking sonar apparatus

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Signal detector and method for detecting signals having selected

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Signal detector and methodology for monitoring sound signals hav

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Signal processing circuit

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Signal processing system for sensing a periodic signal in noise

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Signal processor

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Sonar receiver with improved time varied gain correction

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Sonic wave synchronizer

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

Sound surge detector for alerting headphone users

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

Survival seismic detection system having improved tunable filter

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

System and method for enhancing detection of objects through...

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

System and method for generating a threat alert

Communications – electrical: acoustic wave systems and devices – Receiver circuitry

System and method for heterodyning an ultrasonic signal

Communications – electrical: acoustic wave systems and devices – Receiver circuitry – Responsive to intruder energy

System and method for implementing non-lethal chemical...