2617890

Information

• Patent Grant
• 2617890

• References
• Source

• Patent Number

  2,617,890

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1952
  72 years ago

• CPC

  • G11B5/325 - Erasing heads using permanent magnets

• US Classifications

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