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

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

Location recognition system using stereophonic sound,...

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

Low cost shading for wide sonar beams

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

Low frequency portable lightweight sonar systems and their metho

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

Low frequency sonar systems

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

Low transient switching system

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

Low-frequency directional sonar 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 – 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 – 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 – Distance or direction finding

Method and apparatus for acoustically measuring the level of liq

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

Method and apparatus for coherent burst ranging