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

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

Ultrasonic motion detection system

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

Ultrasonic object detecting apparatus

Communications – electrical: acoustic wave systems and devices – Echo systems

Ultrasonic object detector

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

Ultrasonic obstacle location apparatus and method

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic obstacle sensor

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic path guidance for visually impaired

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic position detecting system

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic proximity switch

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic range finding

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control

Ultrasonic rangefinder

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic rangefinder

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic ranging device

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic ranging device

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic ranging in the near zone

Communications – electrical: acoustic wave systems and devices – Echo systems

Ultrasonic ranging system

Communications – electrical: acoustic wave systems and devices – Echo systems – Parametric sonar

Ultrasonic ranging system and method thereof in air by using...

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

Ultrasonic sensing and monitoring systems

Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding

Ultrasonic sensor

Communications – electrical: acoustic wave systems and devices – Echo systems – Returned signal used for control

Ultrasonic sensor