2475742

Information

• Patent Grant
• 2475742

• References
• Source

• Patent Number

  2,475,742

• Date Filed

  Not available

• Date Issued

  Tuesday, July 12, 1949
  75 years ago

• CPC

  • G10H3/09 - using tapes or wires

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 315 - Electric lamp and discharge devices: systems
  • 369 - Dynamic information storage or retrieval
  • 984 - Musical instruments