2528515

Information

• Patent Grant
• 2528515

• References
• Source

• Patent Number

  2,528,515

• Date Filed

  Not available

• Date Issued

  Tuesday, November 7, 1950
  74 years ago

• CPC

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

• US Classifications

  • 116 - Signals and indicators