3390888

Information

• Patent Grant
• 3390888

• References
• Source

• Patent Number

  3,390,888

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1968
  56 years ago

• CPC

  • G11B3/72 - Groove formations
  • G11B3/48 - Needles contains no documents

• US Classifications

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