Referenced by|
| US4428304 | 15 Jun 1981 | 31 Jan 1984 | Parsons Manufacturing, Incorporated | Adjustable shelf unit | | US4589349 | 14 May 1982 | 20 May 1986 | The Mead Corporation | Extendible shelf | | US4602570 | 6 Jun 1983 | 29 Jul 1986 | Frito-Lay, Inc. | Extendable shelf for a display rack | | US4646658 | 1 Jun 1982 | 3 Mar 1987 | Frito-Lay, Inc. | Extendable shelf for a display rack |
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