1377749

Information

• Patent Grant
• 1377749

• References
• Source

• Patent Number

  1,377,749

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1921
  103 years ago

• CPC

  • G11B23/16 - Record carriers with single-track for recording at spaced intervals along the track thereof

• US Classifications

  • 369 - Dynamic information storage or retrieval