Appeal No. 2006-0627 Application No. 10/263,140 Appellant argues that nothing in any of the references teaches or suggests a “chamber within a chamber” design in which the inner chamber contains a buoyant material (Brief, page 5). Appellant argues that this particular design is critical since, in the event that the outer chamber fails, the inner containment bags provide sufficient buoyancy to prevent listing (id.). 4Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007