Patents by Inventor R. J. Chang

R. J. Chang 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: 5143231
    Abstract: A prop comprising a wall plate fastened in a wall and a supporting frame revolvably fastened in said wall plate for holding garment hangers, wherein said supporting frame can be rotated on said wall plate and positioned at any of a variety of angular positions by fastened a key thereof in any of a variety of notches which are made on a horizontal wall extending from said wall plate around a circle. Spaced rings are fastened in the supporting frame for hanging garment hangers separately.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: September 1, 1992
    Inventor: R. J. Chang