3927721

Information

• Patent Grant
• 3927721

• References
• Source

• Patent Number

  3,927,721

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1975
  49 years ago

• CPC

  • A01B1/08 - with a single blade
  • A01B1/225 - around a substantially horizontal axis
  • Y10T403/32991 - Axially spring-biased coaxial members
  • Y10T403/459 - Helical spring type coupling
  • Y10T403/4614 - Yoke or ring

• US Classifications

  • 172 - Earth working
  • 056 - Harvesters
  • 403 - Joints and connections