3864666

Information

• Patent Grant
• 3864666

• References
• Source

• Patent Number

  3,864,666

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1975
  49 years ago

• CPC

  • F41G7/228 - using acoustic waves
  • B06B1/0618 - of piezo- and non-piezo-electric elements
  • G01S3/8038 - derived from different combinations of signals from separate transducers comparing sum with difference
  • Y10S367/901 - Noise or unwanted signal reduction in nonseismic receiving system
  • Y10S367/905 - Side lobe reduction or shading

• US Classifications

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