Class II Elastics vs Class II Springs: The Difference Will Make You Smile

The Xbow® Class II Corrector is protected by the following patents: US Patent No. 6,168,430 B1

Canadian Patent No. 2,392,021

Crossbow, Xbow, Triple “L” Arch and "Straight to the Target When Straight is the Target" are registered trademarks of Dr. Duncan W. Higgins.