Patents by Inventor Piet Cohen

Piet Cohen 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).

  • Viewer for the successive viewing of a number of transparent images
    Patent number: 4175344
    Abstract: A viewer for the successive viewing of a number of transparent images, comprising a casing with a viewing aperture provided with a lens and a counter-aperture aligned therewith which apertures are formed in two opposite faces of the casing, and further comprising a carrier which is detachably fitted in the casing and which supports a number of images in such a way that they are visible from both sides of the carrier, which carrier can be advanced by means of an advancing member that is connected movably to the casing and that is operated manually. The carrier comprises a strip-shaped slide which can move lengthwise through the casing by operating the advancing member and which is provided with means for detachably fixing a film strip thereon.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: November 27, 1979
    Assignee: Sales Promotion Spits B.V.
    Inventor: Izak (Piet) Cohen
  • Clothes hook
    Patent number: D267455
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: January 4, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Soap holder
    Patent number: D267527
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: January 11, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Combined tumbler and toothbrush holder
    Patent number: D267528
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: January 11, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Soap holder
    Patent number: D267603
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: January 18, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • towel rail
    Patent number: D267761
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: February 1, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Towel rack
    Patent number: D267840
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: February 8, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Shelf
    Patent number: D267844
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: February 8, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Ring for towels
    Patent number: D270503
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: September 13, 1983
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen
  • Brush holder and brush for toilet
    Patent number: D272874
    Type: Grant
    Filed: November 4, 1980
    Date of Patent: March 6, 1984
    Assignee: Materias Plasticas, Limitada
    Inventor: Piet Cohen