2173656

Information

• Patent Grant
• 2173656

• References
• Source

• Patent Number

  2,173,656

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1939
  85 years ago

• CPC

  • G05D3/128 - using clutch or brake
  • Y10S37/907 - Automatic leveling excavators
  • Y10T74/12 - Gyroscopes
  • Y10T74/19051 - Single driven plural drives
  • Y10T74/19535 - Follow-up mechanism

• US Classifications

  • 074 - Machine element or mechanism
  • 037 - Excavating
  • 318 - Electricity: motive power systems