3257642

Information

• Patent Grant
• 3257642

• References
• Source

• Patent Number

  3,257,642

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1966
  59 years ago

• CPC

  • G08G1/085 - using a free-running cyclic timer

• US Classifications

  • 340 - Communications: electrical
  • 315 - Electric lamp and discharge devices: systems