3417391

Information

• Patent Grant
• 3417391

• References
• Source

• Patent Number

  3,417,391

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1968
  56 years ago

• CPC

  • G08B5/24 - with indicator element moving about a pivot
  • G08B5/28 - with hinged flap or arm

• US Classifications

  • 340 - Communications: electrical