3882214

Information

• Patent Grant
• 3882214

• References
• Source

• Patent Number

  3,882,214

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1975
  49 years ago

• CPC

  • G11B11/12 - using recording by optical means
  • G11B3/70 - characterised by the selection of material or structure Processes or apparatus specially adapted for manufacturing record carriers
  • G11B3/72 - Groove formations
  • G11B9/00 - Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00 Record carriers therefor

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER