US PATENT SUBCLASS 2 / 175.4
.~.~ Having a shape retaining internal form (e.g., plate, wire frame, crease retainer, etc.)

Current as of: June, 1999
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2 /   HD   APPAREL

171  DF  HEAD COVERINGS {24}
175.1  DF  .~ Having crown and horizontally extending brim (e.g., hat, etc.) {7}
175.4.~.~ Having a shape retaining internal form (e.g., plate, wire frame, crease retainer, etc.) {1}
175.5  DF  .~.~.~> For brim

DEFINITION

Classification: 2/175.4

Having a shape retaining internal form (e.g., plate, wire frame, crease retainer, etc.):

(under subclass 175.1) Head covering including a rigid or semirigid form configured to impart a predetermined shape to the head covering and having at least one layer of material over its exterior surface.