3791339

Information

• Patent Grant
• 3791339

• References
• Source

• Patent Number

  3,791,339

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1974
  50 years ago

• CPC

  • G10K7/06 - in which the sound-producing member is driven by a fluid

• US Classifications

  • 116 - Signals and indicators