| 198 / | HD | CONVEYORS: POWER-DRIVEN | 
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| 570 | DF | CONVEYING SYSTEM HAVING PLURAL POWER-DRIVEN CONVEYING SECTIONS {18} | 
| 602 |  | .~ Forming a single conveying path {6} | 
| 603 | DF | .~.~> Superposed sections forming an ascending or descending zigzag conveying path | 
| 604 | DF | .~.~> Load simultaneously engaged between and moved by coacting conveyors {1} | 
| 606 | DF | .~.~> Plural sections each formed of or including a closed flexible loop {1} | 
| 608 | DF | .~.~> Plural rotating sections | 
| 609 | DF | .~.~> Plural vibratory sections | 
| 610 | DF | .~.~> Diverse sections {1} |