3790074

Information

• Patent Grant
• 3790074

• References
• Source

• Patent Number

  3,790,074

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1974
  50 years ago

• CPC

  • G06G1/0068 - for conversion from one unit system to another

• US Classifications

  • 235 - Registers
  • 434 - Education and demonstration