1357268

Information

• Patent Grant
• 1357268

• References
• Source

• Patent Number

  1,357,268

• Date Filed

  Not available

• Date Issued

  Tuesday, November 2, 1920
  104 years ago

• CPC

  • G11B3/64 - Re-recording

• US Classifications

  • 033 - Geometrical instruments
  • 369 - Dynamic information storage or retrieval