Patents by Inventor Sidney D. Blue

Sidney D. Blue 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).

  • Convertible shirt collar
    Patent number: 4040125
    Abstract: A collar attached to an outer shirt folds neatly along one curved line when the shirt is worn with the neckband closed or the ends thereof overlapped, and to fold easily along a second curved line, spaced below the first line, when the shirt is worn with the neckband open so the upper portions of the shirt body adjacent the opening will fold back as lapels to lie flatly and neatly against the front panels of the shirt body; the fold lines being defined, at least in part, by slots in the collar interlining.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: August 9, 1977
    Inventor: Sidney D. Blue