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

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

Manual scan imaging sonar

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

Marine current determination

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

Marine depth sounding apparatus

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

Marine electronics with lure depth analyzer

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

Marine seismic streamer retrieval system

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

Matched filter, receiving beam-forming apparatus and sonar...

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

Matching transformer for ultrasonic transducer

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

Material classification apparatus and method

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

Means for improving turnaround time stability for R-C energy det

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

Means for reducing minimum sensing distance of an ultrasonic pro

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

Measurement of air characteristics in the lower atmosphere

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

Measuring apparatus for the automatic measurement of speed, trav

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

Measuring distances using a plurality of frequencies

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

Measuring method and apparatus

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

Measuring method and apparatus

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

Measuring method and apparatus

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

Measuring method and apparatus

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

Mechanical sector scanner head and power train

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

Method and an arrangement for distance measurement using the pul