The invention is directed toward {HEAD ~ a spring} which may be used in cushions, mattresses or {TAIL ~ box springs}, which includes a internal limiting member which assists in limiting the longitudinal compression of the springs, which in one embodiment are plastic 
The invention is directed toward { HEAD ~ a spring } which may be used in cushions , mattresses or { TAIL ~ box springs } , which includes a internal limiting member which assists in limiting the longitudinal compression of the springs , which in one embodiment are plastic
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