3286040

Information

• Patent Grant
• 3286040

• References
• Source

• Patent Number

  3,286,040

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1966
  58 years ago

• CPC

  • H04M1/278 - using punched cards or tapes

• US Classifications

  • 379 - Telephonic communications
  • D14 - Recording, communication, or information retrieval equipment