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

Acoustic range finding system

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

Acoustic range-finding system

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

Acoustic ranging apparatus and method

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

Acoustic ranging system

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

Acoustic ranging systems

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

Acoustic reflectometer for sheet feed sensing

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

Acoustic self-guidance systems for submarine vehicles

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

Acoustic signal detection circuit

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

Acoustic sub-surface interrogator

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

Acoustic-propagation-time measuring apparatus

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

Acoustical imaging interferometer for detection of buried...

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

Acoustical imaging interferometer for detection of buried...

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

Acoustical proximity detection for mobile terminals and...

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

Acoustically monitored shopper traffic surveillance and security

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

Acoustically monitored site surveillance and security system for

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

Acousto-optic two-dimensional coherent optical modulator

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

Active detection system using simultaneous multiple transmission

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

Active sonar for under-ice conditions

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

Adaptable filtering device and method for filtering sonar signal