2520251

Information

• Patent Grant
• 2520251

• References
• Source

• Patent Number

  2,520,251

• Date Filed

  Not available

• Date Issued

  Tuesday, August 29, 1950
  74 years ago

• CPC

  • G11B17/16 - by mechanism in stationary centre post
  • Y10S200/34 - Recording and reproducing

• US Classifications

  • 200 - Electricity: circuit makers and breakers
  • 369 - Dynamic information storage or retrieval