US PATENT SUBCLASS 403 / 229
.~ Helical spring type coupling

Current as of: June, 1999
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403 /   HD   JOINTS AND CONNECTIONS

220  DF  FLEXIBLY CONNECTED RIGID MEMBERS {5}
229.~ Helical spring type coupling

DEFINITION

Classification: 403/229

(under subclass 220) Structure comprising a helical spring connecting the two members.