3747846

Information

• Patent Grant
• 3747846

• References
• Source

• Patent Number

  3,747,846

• Date Filed

  Not available

• Date Issued

  Tuesday, July 24, 1973
  51 years ago

• CPC

  • G09B19/02 - Counting Calculating
  • G06G1/10 - characterised by the graduation
  • G06G1/14 - in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale

• US Classifications

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