2690340

Information

• Patent Grant
• 2690340

• References
• Source

• Patent Number

  2,690,340

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1954
  70 years ago

• CPC

  • G11B19/20 - Driving Starting Stopping Control thereof
  • G11B5/325 - Erasing heads using permanent magnets
  • G11B5/596 - for track following on disks
  • G11B17/028 - of discs rotating during transducing operation
  • G11B25/043 - using rotating discs

• US Classifications

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