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

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

Object detecting apparatus, opening and closing control...

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

Object detecting switch device

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

Object detecting switch device

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

Object detecting system of reflection type

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

Object detecting system using ultrasonic waves

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

Object detecting system using ultrasonic waves

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

Object detection apparatus and method

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

Object detector for detecting buried objects

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

Object detector which compares returned signals from successive

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

Object indicator for moving vehicles

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

Object measuring and weighing apparatus and method for...

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

Obstacle detecting system for vehicle

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

Obstacle detection apparatus

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

Obstacle detection device and method for estimating...

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

Obstacle detection system

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

Obstacle sensor having supersonic sensor

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

Obstacle-detection system

Communications – electrical: acoustic wave systems and devices – Echo systems – Side scanning or contour mapping sonar systems

Oceanographic mapping system

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

Oil heating tank meter for monitoring a plurality of variables