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

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

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

Method and apparatus for acoustic detection of buried objects

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

Method and apparatus for acoustically measuring the level of liq

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

Method and apparatus for active sonar detection enhancement

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

Method and apparatus for coherent burst ranging

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

Method and apparatus for correlation sonar

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

Method and apparatus for detecting and counting articles

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

Method and apparatus for detecting intrusion and...

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

Method and apparatus for detecting position of object with ultra

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

Method and apparatus for detecting the location of a marine pipe

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

Method and apparatus for detection of insoluble sinking pollutan

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

Method and apparatus for determining bedload thickness employing