2856751

Information

• Patent Grant
• 2856751

• References
• Source

• Patent Number

  2,856,751

• Date Filed

  Not available

• Date Issued

  Tuesday, October 21, 1958
  66 years ago

• CPC

  • G04C21/20 - by closing a contact to ring an electro-mechanical alarm
  • G04C21/38 - Adjusting the duration of signals

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 340 - Communications: electrical
  • 968 - Horology