2917590

Information

• Patent Grant
• 2917590

• References
• Source

• Patent Number

  2,917,590

• Date Filed

  Not available

• Date Issued

  Tuesday, December 15, 1959
  65 years ago

• CPC

  • H04R11/08 - Gramophone pick-ups using a stylus Recorders using a stylus
  • H04R11/10 - comprising two or more styli or transducers

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • D14 - Recording, communication, or information retrieval equipment