Patents by Inventor Erik Herbert Carlsson

Erik Herbert Carlsson 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).

  • Adjustable tip for plough share
    Patent number: 4119158
    Abstract: A plough having a share with an accompanying tip that is removably secured on the bottom front portion of the share. The tip is so constructed and arranged that it is adjustable on the plough share so that the extent of life of use of the tip can be significantly increased. Thus, the maximum use of a plough share tip may be effectuated.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: October 10, 1978
    Assignee: Aktiebolaget Overums Bruk
    Inventors: Erik Herbert Carlsson, John Axel Karlsson