US PATENT SUBCLASS 36 / 146
.~.~ With suction retaining means

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}
146.~.~ With suction retaining means

DEFINITION

Classification: 36/146

With suction retaining means:

(under subclass 145) Appliances in which the supporting means is retained in the shoe by means providing a subatmospheric pressure at a shoe engaging surface.