DNA chips; optical glasses; electronic collars to train animals; slide-rules; protective industrial shoes; locks, electric; carpenters' rules; physical and chemical laboratory apparatus and instruments, namely, homogenizers, chromatography columns, centrifuges, ionization apparatus, syringeless filter, fermenter, vacuum distillation; physical and chemical laboratory apparatus and instruments, namely, for extracting nucleic acid, DNA, RNA; physical and chemical laboratory apparatus and instrum...