| 402 / | HD | BINDER DEVICE RELEASABLY ENGAGING APERTURE OR NOTCH OF SHEET |
| 60 | ![]() | SHEET RETAINER WITH RELEASABLE KEEPER (E.G., HOLD DOWN, ETC.) {3} |
| 61 | DF | .~> Keeper cooperating with retainer of varying cross-section {2} |
| 64 | DF | .~> Keeper including wedge type securing means {2} |
| 68 | DF | .~> Keeper including apertured or recessed sheet retainer receiving component {1} |