3840844

Information

• Patent Grant
• 3840844

• References
• Source

• Patent Number

  3,840,844

• Date Filed

  Not available

• Date Issued

  Tuesday, October 8, 1974
  50 years ago

• CPC

  • G01S7/6227 - Plan-position indicators
  • G01S15/87 - Combinations of sonar systems

• US Classifications

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