3704781

Information

• Patent Grant
• 3704781

• References
• Source

• Patent Number

  3,704,781

• Date Filed

  Not available

• Date Issued

  Tuesday, December 5, 1972
  52 years ago

• CPC

  • G06K21/04 - in which coincidence of markings is sensed optically

• US Classifications

  • 209 - Classifying, separating, and assorting solids