Patents by Inventor Hendrikus Grootherder

Hendrikus Grootherder 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).

  • Patent number: 4462537
    Abstract: The invention relates to a box for transporting and selling eggs in fixed amounts, said box comprising a bottom part and a cover part and being provided with standing elements adjoining the bottom part of the box for separately supporting each egg, said boxes being interengageable and nestable in a direction perpendicular to their bottoms in the empty and tilted-up state. According to the invention the standing walls of the bottom part and those of the cover part are at least substantially flat and are tapering from their basic surfaces downwards and upwards respectively.
    Type: Grant
    Filed: October 7, 1981
    Date of Patent: July 31, 1984
    Inventors: Hendrikus Grootherder, Hendrik J. Grootherder