1618210

Information

• Patent Grant
• 1618210

• References
• Source

• Patent Number

  1,618,210

• Date Filed

  Not available

• Date Issued

  Tuesday, February 22, 1927
  97 years ago

• CPC

  • G10K7/02 - in which the sound-producing member is rotated manually or by a motor

• US Classifications

  • 116 - Signals and indicators