2582939

Information

• Patent Grant
• 2582939

• References
• Source

• Patent Number

  2,582,939

• Date Filed

  Not available

• Date Issued

  Tuesday, January 15, 1952
  72 years ago

• CPC

  • G11B3/5854 - using means not contacting the record carrier
  • B23Q11/0064 - by using a magnetic or electric field
  • Y02P70/171 - Devices or processes for removing and reusing chips

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 015 - Brushing, scrubbing, and general cleaning
  • 361 - Electricity: electrical systems and devices
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER