3680228

Information

• Patent Grant
• 3680228

• References
• Source

• Patent Number

  3,680,228

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1972
  51 years ago

• CPC

  • G09B23/186 - for digital electronics; for computers
  • G06D1/00 - Details

• US Classifications

  • 434 - Education and demonstration