3530820

Information

• Patent Grant
• 3530820

• References
• Source

• Patent Number

  3,530,820

• Date Filed

  Not available

• Date Issued

  Tuesday, September 29, 1970
  53 years ago

• CPC

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

• US Classifications

  • 116 - Signals and indicators