2224358

Information

• Patent Grant
• 2224358

• References
• Source

• Patent Number

  2,224,358

• Date Filed

  Not available

• Date Issued

  Tuesday, December 10, 1940
  84 years ago

• CPC

  • G10H3/03 - using pick-up means for reading recorded waves
  • G11B11/00 - Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00 Record carriers therefor

• US Classifications

  • 084 - Music
  • 369 - Dynamic information storage or retrieval
  • 984 - Musical instruments