The provisions of this subchapter shall not apply to manufacturers, wholesalers, jobbers, common carriers or their employees or to public officers or employees while engaged in the performance of their official duties, licensed medical technicians, technologists, nurses, hospitals, research teaching institutions, clinical laboratories, medical doctors, osteopathic physicians, dentists, chiropodists, veterinarians, pharmacists and embalmers in the normal legal course of their respective business or profession, upon the showing of such occupation or employment.
(Prior Code, § 25-141)