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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 5622357 | Foundation unit and method of making the same A foundation unit which can be relaxed in a compact configuration for shipping and which can be then elevated to an expanded state for completion. The foundation unit includes a rectangular grid wire top bearing structure, a rigid bottom substructure, and... | 04/22/1997 |
| 5361434 | Stackable bedding foundation A nestably stackable bedding foundation assembly which replaces the traditional border wire and disposed coil spring foundation assembly in a so-called box spring. The nestably stackable foundation assembly may be nestably stacked with numerous other such... | 11/08/1994 |
| 4739977 | Box spring assembly An improved spring unit for a box spring assembly in which a grid assembly is supported above a frame by a plurality of such spring units. The spring units provide self-limited deflection to prevent them from taking a permanent set after being overloaded.... | 04/26/1988 |
| 4664361 | Spring unit A plurality of main springs and a plurality of intermediate support springs are arranged on a rectangular base plate. Each main spring is made of a single steel wire and consists of two coil portions and a straight rod portion connecting these two coil po... | 05/12/1987 |
| 4068331 | Box spring grid and method of manufacture A box spring grid which includes coil spring engaging ears and a plurality of support wires secured to the grid and each including an ear. The ends of each support wire may be reversely bent around one end coil of a coil spring. Also disclosed is a method... | 01/17/1978 |
| 3953903 | Spring unit support and assembly A coil spring supporting grid structure of the type used to reinforce the top surface of a box spring foundation unit is provided with formations on the longitudinal and transverse wires thereof, enabling a snap-in interconnection with a plurality of coil... | 05/04/1976 |
