1481406

Information

• Patent Grant
• 1481406

• References
• Source

• Patent Number

  1,481,406

• Date Filed

  Not available

• Date Issued

  Tuesday, January 22, 1924
  100 years ago

• CPC

  • G11B3/005 - through hollow arms

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER