2200866

Information

• Patent Grant
• 2200866

• References
• Source

• Patent Number

  2,200,866

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1940
  84 years ago

• CPC

  • G11B3/72 - Groove formations

• US Classifications

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