3560989

Information

• Patent Grant
• 3560989

• References
• Source

• Patent Number

  3,560,989

• Date Filed

  Not available

• Date Issued

  Tuesday, February 2, 1971
  53 years ago

• CPC

  • G11B13/06 - optically and by styli

• US Classifications

  • 346 - Recorders
  • 250 - Radiant energy
  • 353 - Optics: image projectors