3689894

Information

• Patent Grant
• 3689894

• References
• Source

• Patent Number

  3,689,894

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1972
  52 years ago

• CPC

  • G06K19/00 - Record carriers for use with machines and with at least a part designed to carry digital markings
  • G06K17/00 - Methods or arrangements for effecting co-operative working between equipments covered by two or more of the preceding main groups
  • G06K17/0003 - Automatic card files incorporating selecting, conveying and possibly reading and/or writing operations
  • G06K17/0016 - Selecting or retrieving of images by means of their associated code-marks

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval