Since 1987, a subsidiary of Intermagnetics General Corporation - also SBIR involved - APD Cryogenics is focused to Cryotiger closed-cycle systems to be used instead of LN2 for cooling; both standard and customized open- or closed-cycle laboratory cryogenic research systems (Displex, Heliplex, Heli-tran, OmniPlex); Marathon high-performance cryogenic vacuum pumps; water pumps (AquaTrap); shield coolers; and helium recondensers.