2553822

Information

• Patent Grant
• 2553822

• References
• Source

• Patent Number

  2,553,822

• Date Filed

  Not available

• Date Issued

  Tuesday, May 22, 1951
  73 years ago

• CPC

  • G11B3/48 - Needles contains no documents

• US Classifications

  • 369 - Dynamic information storage or retrieval