1436004

Information

• Patent Grant
• 1436004

• References
• Source

• Patent Number

  1,436,004

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1922
  102 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