3807629

Information

• Patent Grant
• 3807629

• References
• Source

• Patent Number

  3,807,629

• Date Filed

  Not available

• Date Issued

  Tuesday, April 30, 1974
  50 years ago

• CPC

  • G09B29/14 - Local time charts
  • G06C3/00 - Arrangements for table look-up

• US Classifications

  • 235 - Registers
  • 434 - Education and demonstration