| http://www.w3.org/ns/prov#value | - d assembly tube, said securing means including a pair of diametrically opposite wings, the lower portions of which are normally biased towards one another, a central, longitudinally extending tube bifurcated at its lower end interconnecting said wings said bifurcated central tube having an internally threaded bore, an upwardly facing shoulder at the lower portion of each said wings, and means comp
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