Patents by Inventor Karl G. Sieber

Karl G. Sieber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Excavation bucket
    Patent number: 4896444
    Abstract: An excavation bucket having a closed top and an open front and comprising two opposed sidewalls each with a flat and an outwardly extending flanged portion, which bucket digs an excavation which has a combination of a vertical wall area with an adjacent and contiguous sloped wall area. Teeth are mounted outwardly from the flanged portions of the sidewalls producing a terracing effect in the sloped sidewall area of the excavation.
    Type: Grant
    Filed: July 28, 1988
    Date of Patent: January 30, 1990
    Inventors: Karl G. Sieber, Kurt G. Sieber
  • Excavation bucket
    Patent number: 4719711
    Abstract: An excavation bucket having a closed top and an open front and comprising two opposed sidewalls each with a flat and an outwardly extending flanged portion, which bucket digs an excavation which has a combination of a vertical wall area with an adjacent and contiguous sloped wall area. Teeth are mounted outwardly from the flanged portions of the sidewalls producing a terracing effect in the sloped sidewall area of the excavation.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: January 19, 1988
    Inventors: Karl G. Sieber, Kurt G. Sieber