Patents by Inventor Jan O. Crillesen

Jan O. Crillesen 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).

  • Assembling plug
    Patent number: 4359294
    Abstract: To secure an assembling of two boards against displacement in one direction the assembling plug is worked out as a body (1) having a cross section increasing from a central portion (2) to both sides. The body (1) is placed in corresponding recesses in the two boards so that the central portion (2) is co-extensive with the tangent surfaces of the two boards. The body may have conical faces (4) with planes (4') tangent to these. FIG. 1.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: November 16, 1982
    Assignee: Ole Leth
    Inventor: Jan O. Crillesen