US PATENT SUBCLASS 623 / 42
.~.~.~ 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}
39  DF  .~ Knee {3}
40  DF  .~.~ Combined knee and foot actuator {2}
42.~.~.~ Spring

DEFINITION

Classification: 623/42

Spring:

(under subclass 40) Subject matter provided with an elastic device which regains its original shape after being compressed or expanded.