3638238

Information

• Patent Grant
• 3638238

• References
• Source

• Patent Number

  3,638,238

• Date Filed

  Not available

• Date Issued

  Tuesday, January 25, 1972
  53 years ago

• CPC

  • G06K9/645 - using a resistor matrix

• US Classifications

  • 382 - Image analysis
  • 235 - Registers
  • 324 - Electricity: measuring and testing
  • 360 - Dynamic magnetic information storage or retrieval