2519103

Information

• Patent Grant
• 2519103

• References
• Source

• Patent Number

  2,519,103

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1950
  74 years ago

• CPC

  • G11B3/70 - characterised by the selection of material or structure Processes or apparatus specially adapted for manufacturing record carriers
  • G09B15/00 - Teaching music
  • G11B3/74 - Multiple output tracks

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 084 - Music
  • 434 - Education and demonstration