Patents by Inventor Hermanus P. M. De Boer

Hermanus P. M. De Boer 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).

  • Supporting plate unit for ceiling
    Patent number: 5618017
    Abstract: This device includes a supporting plate unit to contact a ceiling panel and for supporting one or more objects which project at least partially through the ceiling panel, in which the supporting plate unit comprises at least one supporting plate which is fixed with one or more retaining lips in the ceiling panel, and the supporting plate preferably comprises a triangular section for reinforcing the structure thereof.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: April 8, 1997
    Inventor: Hermanus P. M. De Boer