A surgical spinal waxer is disclosed with a plurality of differently contoured surfaces for applying bone wax to a number of differently contoured portions of lamina in the spine. The different surfaces include a concave surface, a convex surface, two flat side surfaces, at least one which has a depression...http://www.google.de/patents/US5531749?utm_source=gb-gplus-sharePatent US5531749 - Spinal bone waxer
