2640888

Information

• Patent Grant
• 2640888

• References
• Source

• Patent Number

  2,640,888

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1953
  71 years ago

• CPC

  • H04R9/12 - Gramophone pick-ups using a stylus Recorders using a stylus

• US Classifications

  • 369 - Dynamic information storage or retrieval