3680082

Information

• Patent Grant
• 3680082

• References
• Source

• Patent Number

  3,680,082

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1972
  52 years ago

• CPC

  • G07F7/08 - by coded identity card or credit card or other personal identification means
  • G06Q20/4037 - Remote solvency checks
  • H01H13/76 - wherein some or all of the operating members actuate different combinations of the contact sets
  • H04L27/26 - Systems using multi-frequency codes

• US Classifications

  • 341 - Coded data generation or conversion
  • 379 - Telephonic communications