2972484

Information

• Patent Grant
• 2972484

• References
• Source

• Patent Number

  2,972,484

• Date Filed

  Not available

• Date Issued

  Tuesday, February 21, 1961
  63 years ago

• CPC

  • G11B3/24 - acting to decrease pressure on record

• US Classifications

  • 369 - Dynamic information storage or retrieval