3909517

Information

• Patent Grant
• 3909517

• References
• Source

• Patent Number

  3,909,517

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1975
  49 years ago

• CPC

  • G11B9/061 - Record carriers characterised by their structure or form or by the selection of the material; Apparatus or processes specially adapted for the manufacture of record carriers
  • G11B11/05 - with reproducing by capacitive means
  • H04N5/7605 - on discs or drums
  • H04N5/903 - using variable electrical capacitive recording

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 386 - Motion video signal processing for recording or reproducing
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER