Patents by Inventor Robert G. C. Jonker

Robert G. C. Jonker 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: 5009335
    Abstract: A device for displaying flat articles, such as a book, gramophone record, card etc., which device is substantially provided with a frame 1 and a number of horizontally extending carrier elements 6 for these particles supported by the frame, whereby each carrier element is manufactured from a strip of plate material that is bent over along lines running in lengthwise direction in order to obtain a substantially U-shaped cross section having legs of different length, whereby the free edge 8 of the long leg 7 is folded outward over more than 90.degree., and whereby the frame is provided with at least one suspension member fitting in the fold in addition to at least one support means 2 extending downwards from that member, as a result of which a loose chain of elements 6 can be formed, of which the height and angle of slope can be adapted to any purpose of use.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: April 23, 1991
    Inventor: Robert G. C. Jonker
  • Patent number: 4867320
    Abstract: This invention relates to a connecting structure for panels intended for use in a storage and/or display device for objects of an arbitrary nature, such as books, clothing etc., consisting substantially of adjacent compartments separated by load bearing units.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: September 19, 1989
    Inventor: Robert G. C. Jonker
  • Patent number: D300701
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: April 18, 1989
    Inventor: Robert G. C. Jonker