2939716

Information

• Patent Grant
• 2939716

• References
• Source

• Patent Number

  2,939,716

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1960
  64 years ago

• CPC

  • H04R17/06 - comprising two or more styli or transducers

• US Classifications

  • 369 - Dynamic information storage or retrieval