US PATENT SUBCLASS 623 / 52
.~.~.~ Spring

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}
47  DF  .~ Ankle {2}
50  DF  .~.~ Resiliently actuated or controlled {2}
52.~.~.~ Spring

DEFINITION

Classification: 623/52

Spring:

(under subclass 50) Subject matter having an elastic device which regains its original shape after being compressed or expanded.