Appeal No. 1999-2809 Application No. 08/155,946 BACKGROUND Appellants' invention relates to a cabinet structure having improved strength and sound absorption, wherein said cabinet structure includes a top piece (10), a bottom piece (8), side walls (4) and a rear wall (6). At least one of the walls includes an outer wall (14 or 20) attached to an inner wall (12 or 18) to define a cavity therebetween. The cavity includes at least one strengthening element (16) having a pattern of apertures facing the inner and outer walls and positioned between the inner wall and the outer wall in the cavity and having a thickness so as to contact the inner wall and the outer wall, wherein the pattern of apertures comprises a plurality of interconnected columns having two or more vertically aligned apertures and no two abutting apertures of adjacent columns form a horizontal row. The prior art references of record relied upon by the examiner in rejecting claims 1, 3-12, 14-16, 18-21, 23-25, 55-90, 92-95, 97-99, 101-103, 105 and 106 are: Wilkins 3,295,279 Jan. 3, 1967 Blodee et al. (Blodee) 4,338,990 Jul. 13, 1982 22Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007