3837569

Information

• Patent Grant
• 3837569

• References
• Source

• Patent Number

  3,837,569

• Date Filed

  Not available

• Date Issued

  Tuesday, September 24, 1974
  50 years ago

• CPC

  • G06G1/0068 - for conversion from one unit system to another
  • Y10S116/47 - Scale conversion

• US Classifications

  • 235 - Registers
  • 116 - Signals and indicators
  • 434 - Education and demonstration
  • D18 - Printing and office machinery