Abstract: A convertible copy holder has tracks on its rear surface that allow it to be attached to a swing arm on a desk top brace as desired. Further, the holder is made hollow to provide a storage compartment. A rib is located along one edge of the copy holder to receive a line guide, which is structured so that it may be pivoted from the copy surface. Also, there is a channel along the top of the copy holder which receives, and slidably retains, a large paper clip.

Abstract: A file storage unit has a generally rectangular frame which is open at the front for receipt of a sliding drawer. The drawer has downwardly projecting ridges which slide along the interior of the frame. In addition, the front portion of the frame is provided with a snap-on reinforcing rim which acts to strengthen the unit and to accommodate the stacking of several units. A stop means is provided on the drawer which contacts a portion of the rim to prevent the drawer from being accidently withdrawn from the frame. Further, openings on the rear wall of the frame and in the handle of the drawer allow the unit to be conveniently carried.

Abstract: A sign holder assembly which is adapted to be slidably mounted on various supports by means of open longitudinal cylindrical recesses with parallel walls along the opening of the recess, and extending necks with longitudinal cylindrical projections at the end. The projections are receivable in the recesses and the parallel walls being the necks so that there is little pivoting between the sign and its support.

Abstract: A hanging partition folder with a generally conventional structure has pivotal hanging devices at the outer corners thereof. These corners also have a cut off shape to permit the pivotal movement of the hanging devices between a retracted position in which they are substantially flush with the folder and an extended position in which they project from the folder. In the extended position, a hook portion of each hanging device is adapted to make contact with the rails of a suspension file system.