1346768

Information

• Patent Grant
• 1346768

• References
• Source

• Patent Number

  1,346,768

• Date Filed

  Not available

• Date Issued

  Tuesday, July 13, 1920
  104 years ago

• CPC

  • E05B45/04 - with detonating alarm devices
  • E05C19/004 - at an angle between door and floor or wall

• US Classifications

  • 116 - Signals and indicators
  • 340 - Communications: electrical