2552757

Information

• Patent Grant
• 2552757

• References
• Source

• Patent Number

  2,552,757

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1951
  73 years ago

• CPC

  • G11B3/093 - Means coupled to the cover
  • G11B19/165 - by closing the cover

• US Classifications

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