Patents by Inventor Johan G. Smits

Johan G. Smits 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).

  • Ceiling and coupling element for the same
    Patent number: 4481745
    Abstract: In a ceiling grating of carrier girders two carrier girders are closely arranged next to one another so that a line channel is formed in between them. These two carrier girders are interconnected by means of runner-shaped coupling elements formed as plates having between their limbs a line channel.
    Type: Grant
    Filed: January 24, 1984
    Date of Patent: November 13, 1984
    Assignee: Nemaco Trading Limited
    Inventors: Johan G. Smits, Johan A. de Weerd, Cor K. Vuyk