3742433

Information

• Patent Grant
• 3742433

• References
• Source

• Patent Number

  3,742,433

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • G01S15/34 - using transmission of frequency-modulated waves and the received signal, or a signal derived therefrom, being heterodyned with a locally-generated signal related to the contemporaneous transmitted signal to give a beat-frequency signal
  • G01S7/5345 - Gain control of receivers
  • G01S15/06 - Systems determining the position data of a target
  • G09B21/006 - using audible presentation of the information
  • Y10S367/901 - Noise or unwanted signal reduction in nonseismic receiving system
  • Y10S367/91 - Portable sonar devices

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices