US PATENT SUBCLASS 36 / 181
.~.~.~ Comprising multiple layers

Current as of: June, 1999
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36 /   HD   BOOTS, SHOES, AND LEGGINGS

140  DF  ORTHOPEDIC BOOT OR SHOE WITH CORRECTIVE ELEMENT {4}
145  DF  .~ Arch support {8}
166  DF  .~.~ For the longitudinal arch {6}
181.~.~.~ Comprising multiple layers

DEFINITION

Classification: 36/181

Comprising multiple layers:

(under subclass 166) Appliances in which the supporting means is made up of at least two layers which support the longitudinal arch of the foot.