2990891

Information

• Patent Grant
• 2990891

• References
• Source

• Patent Number

  2,990,891

• Date Filed

  Not available

• Date Issued

  Tuesday, July 4, 1961
  63 years ago

• CPC

  • A01B3/38 - without alternating possibility
  • A01B63/045 - for vertically adjusting wheels or similar rotary supporting elements

• US Classifications

  • 172 - Earth working