3461249

Information

• Patent Grant
• 3461249

• References
• Source

• Patent Number

  3,461,249

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1969
  55 years ago

• CPC

  • G11B15/12 - Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads Masking of beams
  • G11B15/44 - Speed-changing arrangements Reversing arrangements Drive transfer means therefor
  • G11B15/448 - automatic reverse drive transfer therefor
  • G11B27/22 - Means responsive to presence or absence of recorded information signals
  • G11B27/28 - by using information signals recorded by the same method as the main recording
  • G11B2220/90 - Tape-like record carriers

• US Classifications

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