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

Navigation aid

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

Navigation system for maneuvering a structure about a submerged

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

Near ultrasonic pattern comparison intrusion detector

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

Networked sonar observation of selected seabed environments

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

Networked sonar observation of selected seabed environments

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

Noise adaptive sonar signal processor

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

Noise trap circuit

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

Non-contacting liquid level detection system

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

Non-invasive acoustic velocimetric apparatus and method

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

Noninvasive ultrasonic proximity detector for a fluid actuated c

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

Noninvasive ultrasonic proximity detector for a fluid actuated c

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

Nonlinear techniques for pressure vector acoustic sensor...

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

Nuclear reactor vessel inspection system and method with remote