to carry business of manufacturers of and dealers in laboratory, scientific, research, electrical, photographical,electronic, nuclear, atomic energy, dental optical, medical and surgical apparatus, equipment, instruments, and materials and technical and educational supplies and the business of chemists, druggists, drysalters, oil and colour men, importers and manufacturers of and dealers in pharmaceutical, medicinal, industrial and other, preparations and articles of all kinds and to carry on the business of manufacturers of and dealers in anatomical, orthopaedic, dental optical, and surgical, appliances of all kinds and for all requisites for hospitals, doctors, dentists, opticians, patents and invalids.