3487568

Information

• Patent Grant
• 3487568

• References
• Source

• Patent Number

  3,487,568

• Date Filed

  Not available

• Date Issued

  Tuesday, January 6, 1970
  55 years ago

• CPC

  • H04L17/16 - Apparatus or circuits at the receiving end

• US Classifications

  • 040 - Card, picture, or sign exhibiting