Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 181/123
Name: Acoustics > Echo system
Description: Subject matter having means for sending out a sound wave and receiving said wave after a reflection being utilized to add some information to the original wave.










Sub-classes under this class:

Class Number Class Name Patents
181/124 Altitude or depth detection 42


Patents under this class:

Patent Number Title Of Patent Date Issued
8220584 Hybrid level measurement system Jul. 17, 2012
5363341 Level measuring device which can be assembled from components Nov. 8, 1994
4945520 Hydro-acoustic device for warning sea mammals Jul. 31, 1990
4943119 Height control device and method for a fixture for machining an object essentially defined by a single plane Jul. 24, 1990
4939703 Transducer baffle and sensor using same Jul. 3, 1990
4796726 Ultrasonic rangefinder Jan. 10, 1989
4750584 Distance measuring device Jun. 14, 1988
4739860 Ultrasonic rangefinder Apr. 26, 1988
4635240 Sonar navigation system Jan. 6, 1987
4326272 Electronic intruder detection system Apr. 20, 1982











 
 
  Recently Added Patents
Non-transitory computer readable recording medium storing print management program, print management device, print management method, and print system
Information recording medium and information processing method for accessing content with license or copyright protection
Method for detecting motion of an electrical device or apparatus
Process for producing .beta.-sialon fluorescent material
Viewing stand
Preparation process of transition metal boride and uses thereof
Method and CTDevice for computer tomographic spiral scanning of a patient
  Randomly Featured Patents
Roofliner for a motor vehicle
Fuel assembly for a boiling water reactor
Long wavelength infrared detector
Pediculicide compositions
Copying method and device
Light emitting device package and method for manufacturing the same
Tire tread
Stencil printer
Apparatus for transporting bundles of flat articles
Semiconductor device with common pin for address and data