3571808

Information

• Patent Grant
• 3571808

• References
• Source

• Patent Number

  3,571,808

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1971
  54 years ago

• CPC

  • G06F7/491 - Computations with decimal numbers radix 12 or 20.
  • G06F7/4981 - Adding; Subtracting
  • G06F15/02 - manually operated with input through keyboard and computation using a built-in programme
  • G11C19/184 - with field-effect transistors

• US Classifications

  • 713 - Electrical computers and digital processing systems: support