The apparatus 1 wherein input and output magazines are mounted on opposite sides of the elevator assembly, and the chuck means includes first and second chucks moveable in radial directions for carrying {HEAD ~ wafers} from the input magazine to {TAIL ~ the trays} and from the trays to the output magazine, respectively 
The apparatus 1 wherein input and output magazines are mounted on opposite sides of the elevator assembly , and the chuck means includes first and second chucks moveable in radial directions for carrying { HEAD ~ wafers } from the input magazine to { TAIL ~ the trays } and from the trays to the output magazine , respectively
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