| http://www.w3.org/ns/prov#value | - Also, the plates may be flat or may be curved, such as illustrated in Fig. 12, wherein cup-shaped plates 54- are substituted for discs 45, with the concave surfaces thereof facing toward the adjacent filtering discs D, the plates 54 thereby being disposed in pairs between each adjacent pair .of filtering discs D with one cup-shaped plate 54 at each end, beyond the end filtering disc D. As will be
|
