| http://www.w3.org/ns/prov#value | - entary side view illustrating a drive for the lifts;FIG. 18 is a sectional view taken generally on line 18--18 of FIG. 17;FIG. 19 is a fragmentary sectional view taken generally on line 19--19 of FIG. 4 and illustrating the linkage connecting the lifts with the drive;FIG. 20 is a fragmentary side view of another drive for the lifts; andFIG. 21 is a fragmentary sectional view taken generally on lin
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