352 / | HD | OPTICS: MOTION PICTURES |
166 | DF | CAMERA AND/OR PROJECTOR DRIVE MECHANISMS {14} |
191 | DF | .~ With film engaging claws reciprocally driven to engage film {2} |
194 | .~.~ Cam actuated {2} | |
195 | DF | .~.~.~> Scroll type |
196 | DF | .~.~.~> With single fixed pivot |