74 / | HD | MACHINE ELEMENT OR MECHANISM |
469 | DF | CONTROL LEVER AND LINKAGE SYSTEMS {8} |
* | DD | .~ Elements {8} |
543 | DF | .~.~ Handles {6} |
551.1 | .~.~.~ Handle bars {4} | |
551.2 | DF | .~.~.~.~> Spring biased or supported |
551.3 | DF | .~.~.~.~> Folding or adjustable {2} |
551.8 | DF | .~.~.~.~> Attachments and accessories |
551.9 | DF | .~.~.~.~> Handholds and grips |