1992727

Information

• Patent Grant
• 1992727

• References
• Source

• Patent Number

  1,992,727

• Date Filed

  Not available

• Date Issued

  Tuesday, February 26, 1935
  91 years ago

• CPC

  • H04R19/08 - comprising two or more styli or transducers

• US Classifications

  • 369 - Dynamic information storage or retrieval