Patents by Inventor Mark W. Eilrich

Mark W. Eilrich 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).

  • Kaleidoscope
    Patent number: 5029954
    Abstract: A kaleidoscope having a removable object tube with inner elongated mirrored planar surfaces. The object tube is of a transparent solid material filled with a clear transparent viscous liquid with a plurality of contrasting color discrete particles therein.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: July 9, 1991
    Assignee: WildeWood Creative Products
    Inventors: Mark W. Eilrich, Hazel O. Baker