3673688

Information

• Patent Grant
• 3673688

• References
• Source

• Patent Number

  3,673,688

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1972
  51 years ago

• CPC

  • G06G3/00 - Devices in which the computing operation is performed mechanically

• US Classifications

  • 033 - Geometrical instruments