3623734

Information

• Patent Grant
• 3623734

• References
• Source

• Patent Number

  3,623,734

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1971
  53 years ago

• CPC

  • G11B3/125 - by using electric or magnetic means
  • H04R9/16 - signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

• US Classifications

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