3361974

Information

• Patent Grant
• 3361974

• References
• Source

• Patent Number

  3,361,974

• Date Filed

  Not available

• Date Issued

  Tuesday, January 2, 1968
  57 years ago

• CPC

  • G04C21/28 - by closing a contact to put into action electro-acoustic means

• US Classifications

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