LandOfFree - US Patents - Listing for Communications, electrical: acoustic wave systems and devices,Echo systems,Presence or movement only detection

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Surveillance system in which a reflected signal pattern is compa

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Swimming pool intrusion alarm system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic alarm device

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic displacement sensor using digital signal...

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Reexamination Certificate

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Ultrasonic doppler fish detector

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic intrusion alarm system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic intrusion alarm system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic intrusion alarm system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic intrusion detection system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic line sensor

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic motion detection system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic object detecting apparatus

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic obstacle location apparatus and method

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic sensing and monitoring systems

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasonic type motion detector

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasound area surveillance system

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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Ultrasound sensor

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Reexamination Certificate

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Water turbulence detector

Communications – electrical: acoustic wave systems and devices – Echo systems – Presence or movement only detection

Patent

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