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} |