74351372
Jan 22, 1993
Aug 6, 1996
scientific and laboratory apparatus; namely, thin layer evaporators, stills and gasifiers with internal condensors for distillation, degasification, stripping, demonomerization, and concentration
Electrical and Scientific Apparatusheating and cooling apparatus; namely, thin layer evaporators, stills and gasifiers with internal condensors for distillation, degasification, stripping, demonomerization, and concentration
Environmental Control Apparatus