Patents by Inventor Samuel F. Lam

Samuel F. Lam 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).

  • Spot mounder method and apparatus
    Patent number: 5210964
    Abstract: Method and apparatus for forming spot mounds used in assisting the germination and growth of tree seedlings in reforestation. A crawler moves forwardly while a digging blade connected to a frame is lowered into the soil in order to overturn the soil and form a mound. After the digging blade is lowered into the ground, the digging blade rotates so as to better form and thereafter pass the formed mound without interference.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: May 18, 1993
    Assignee: The Province of British Columbia, Ministry of Forests
    Inventors: Samuel F. Lam, James A. Maxwell, James M. Ewart