3230312

Information

• Patent Grant
• 3230312

• References
• Source

• Patent Number

  3,230,312

• Date Filed

  Not available

• Date Issued

  Tuesday, January 18, 1966
  59 years ago

• CPC

  • H04M1/6515 - using magnetic tape
  • H04M1/647 - using magnetic tape

• US Classifications

  • 379 - Telephonic communications
  • 200 - Electricity: circuit makers and breakers