3220739

Information

• Patent Grant
• 3220739

• References
• Source

• Patent Number

  3,220,739

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1965
  59 years ago

• CPC

  • G11B3/5854 - using means not contacting the record carrier

• US Classifications

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