3647224

Information

• Patent Grant
• 3647224

• References
• Source

• Patent Number

  3,647,224

• Date Filed

  Not available

• Date Issued

  Tuesday, March 7, 1972
  52 years ago

• CPC

  • G11B3/18 - Damping by using viscosity effect

• US Classifications

  • 369 - Dynamic information storage or retrieval