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
Transmitter and receiver for streaming media including packet padding
Pausing a VoiceXML dialog of a multimodal application
System and method for providing definitions
Data architecture and user interface for plasma processing related software applications
Non-phosphorus-based gellant for hydrocarbon fluids
Solar cell with hyperpolarizable absorber
Optical receiver and optical transfer apparatus
  Randomly Featured Patents
Process to produce an enrichment feed
Tire for two-wheeled vehicle comprising looped crown reinforcement
Optical property measurement apparatus
Method of hot-air drying
Polymers having enhanced durable hydrophilicity and durable rewetting properties and process of producing the same
Fully-depleted-collector silicon-on-insulator (SOI) bipolar transistor useful alone or in SOI BiCMOS
Enhanced scalable CPU for coded execution of SW in high-dependable safety relevant applications
Nonaqueous electrolyte secondary battery and method for manufacturing electrode of nonaqueous electrolyte secondary battery
Self-wringing absorbent device operable with one hand
Ultra-high Q micro-resonator and method of fabrication