Birch, Stewart, Kolasch & Birch, LLP
Assembly including mutually cooperating and interfitting projections for releasable engagement of an auxiliary glasses frame to a pair of spectacles
 An assembly enabling detachable fitting of a pair of auxiliary lenses to a pair of primary spectacles; the assembly including a pair of projections on a primary spectacle frame each having a recess or opening which each receive a corresponding projection on an auxiliary frame which holds the pair of auxiliary lenses. The arrangement is such that each projection on the auxiliary frame positively engages an opening on a corresponding projection on the primary spectacle frame. 
G
G02C
inventional
Edmund
Wong