1444685

Information

• Patent Grant
• 1444685

• References
• Source

• Patent Number

  1,444,685

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1923
  102 years ago

• CPC

  • G08B13/22 - Electrical actuation
  • Y10S200/20 - Sound and vibration operated

• US Classifications

  • 367 - Communications, electrical: acoustic wave systems and devices
  • 200 - Electricity: circuit makers and breakers