3772471

Information

• Patent Grant
• 3772471

• References
• Source

• Patent Number

  3,772,471

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1973
  51 years ago

• CPC

  • G11B5/325 - Erasing heads using permanent magnets
  • G11B5/00826 - comprising a plurality of single poles or gaps or groups thereof operative at the same time
  • G11B5/024 - Erasing
  • G11B5/133 - with cores composed of particles
  • G11B5/29 - Structure or manufacture of unitary devices formed of plural heads for more than one track

• US Classifications

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