3720795

Information

• Patent Grant
• 3720795

• References
• Source

• Patent Number

  3,720,795

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  51 years ago

• CPC

  • H04M1/276 - using magnetic recording
  • G11B5/004 - Recording on, or reproducing or erasing from, magnetic drums
  • G11B25/04 - using flat record carriers

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 379 - Telephonic communications
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER