2500638

Information

• Patent Grant
• 2500638

• References
• Source

• Patent Number

  2,500,638

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1950
  74 years ago

• CPC

  • G01S15/105 - using irregular pulse repetition frequency
  • Y10S367/91 - Portable sonar devices

• US Classifications

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