Appeal No. 2006-0104 2 Application No. 10/055,440 Appellants’ invention relates to subterranean tanks for receiving sewage or serving as a cistern for holding water, which tanks are rotationally molded of synthetic resin material. As further noted on page 1 of the specification: More particularly, the present invention is concerned with a tank of the foregoing type provided with parabolic wall construction and a portal arrangement for accommodating a uniquely and complementally configured cover or a synthetic resin riser which is constructed in such a manner that it may trimmed in multiple locations along its axial length while retaining wall strength and the ability to couple to the tank and receive a cover thereon. Claim 1, the sole independent claim on appeal, is representative of the subject matter before us on appeal and a copy of that claim can be found in the “Claims Appendix” attached to appellants’ brief. The prior art references relied upon by the examiner in rejecting the appealed claims are: Wittenberg 2,218,188 Oct. 15, 1940 Hall 4,187,647 Feb. 12, 1980 Seizert et al. (Seizert) 5,207,463 May 4, 1993 Jones et al. (Jones) 5,525,007 Jun. 11, 1996 AK Industries, Inc., “The Best Around Underground”, pages 1-16, (hereinafter AKI).Page: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007