1438576

Information

• Patent Grant
• 1438576

• References
• Source

• Patent Number

  1,438,576

• Date Filed

  Not available

• Date Issued

  Tuesday, December 12, 1922
  102 years ago

• CPC

  • B60Q5/00 - Arrangements or adaptations of acoustic signal devices
  • Y10S122/16 - Welding

• US Classifications

  • 116 - Signals and indicators
  • 122 - Liquid heaters and vaporizers