US PATENT SUBCLASS 623 / 56
.~.~.~ Fluid cushion

Current as of: June, 1999
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623 /   HD   PROSTHESIS (I.E., ARTIFICIAL BODY MEMBERS), PARTS THEREOF, OR AIDS AND ACCESSORIES THEREFOR

27  DF  LEG {9}
53  DF  .~ Foot {2}
55  DF  .~.~ Resilient {1}
56.~.~.~ Fluid cushion

DEFINITION

Classification: 623/56

Fluid cushion:

(under subclass 55) Subject matter in which a resilient means comprises a pad filled with a gas or liquid.