2539717

Information

• Patent Grant
• 2539717

• References
• Source

• Patent Number

  2,539,717

• Date Filed

  Not available

• Date Issued

  Tuesday, January 30, 1951
  74 years ago

• CPC

  • G11B3/66 - Erasing information
  • Y10S264/66 - Processes of reshaping and reforming
  • Y10T74/20666 - Lever engaging

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 074 - Machine element or mechanism
  • 219 - Electric heating
  • 318 - Electricity: motive power systems
  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER