Patents by Inventor Bjorn R. L. von Tell

Bjorn R. L. von Tell 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).

  • Method and means to fill out uneven surfaces, for example in block boards
    Patent number: 4371568
    Abstract: The present invention relates to a method to fill out uneven surfaces, whereby a fine grain, fusible powder is excessively applied to the surface to be treated, the excess is removed, and the remaining powder which fills cracks and cavities is temporarily heated to melt. The invention further reveals a means to carry out the method.
    Type: Grant
    Filed: May 14, 1981
    Date of Patent: February 1, 1983
    Inventor: Bjorn R. L. von Tell