3408641

Information

• Patent Grant
• 3408641

• References
• Source

• Patent Number

  3,408,641

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1968
  56 years ago

• CPC

  • H04M1/274 - with provision for storing more than one subscriber number at a time
  • Y10T16/53625 - Hook to hook

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 016 - Miscellaneous hardware
  • 346 - Recorders
  • 379 - Telephonic communications