3531586

Information

• Patent Grant
• 3531586

• References
• Source

• Patent Number

  3,531,586

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1970
  54 years ago

• CPC

  • G07F17/28 - for radio apparatus
  • H03F3/12 - with Esaki diodes
  • H04N7/06 - Systems for the simultaneous transmission of one television signal
  • H04N7/164 - Coin-freed apparatus

• US Classifications

  • 725 - Interactive video distribution systems
  • 348 - Television
  • 380 - Cryptography