2432444

Information

• Patent Grant
• 2432444

• References
• Source

• Patent Number

  2,432,444

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1947
  77 years ago

• CPC

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

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 200 - Electricity: circuit makers and breakers
  • 361 - Electricity: electrical systems and devices