3824789

Information

• Patent Grant
• 3824789

• References
• Source

• Patent Number

  3,824,789

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1974
  50 years ago

• CPC

  • G04C21/20 - by closing a contact to ring an electro-mechanical alarm
  • G04B23/03 - Alarm signal stop arrangements
  • G04C21/28 - by closing a contact to put into action electro-acoustic means

• US Classifications

  • 368 - Horology: time measuring systems or devices
  • 968 - Horology