Patent ID: 8143053

Claim:
A lockable cell growth chamber comprising (a) a circular dish supported on a circular base, said dish having a bottom plate and a bottom cylindrical side wall, and (b) a circular lid having a top plate and a top cylindrical side wall, said lid sized so as to fit over the bottom cylindrical side wall of said dish wherein said base and said lid are provided with anti-locking and locking means for both preventing locking engagement of said base and lid and for securing said base and lid in locking engagement, said anti-locking and locking means comprising at least two pairs of mateable members, each of said pairs of mateable members comprising (i) an L-shaped receiving member proximal to a blocking boss, and (ii) a radial tab sized and shaped so as to be stoppable by said blocking boss, yet slidably and compressionably engagable with said L-shaped docking member.