1909995

Information

• Patent Grant
• 1909995

• References
• Source

• Patent Number

  1,909,995

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1933
  92 years ago

• CPC

  • H04R19/06 - Gramophone pick-ups using a stylus Recorders using a stylus

• US Classifications

  • 369 - Dynamic information storage or retrieval