Can openers, non-electric; Non-electric can openers

chemicals used in industry, science, photography; chemicals used in agriculture, horticulture and forestry except fungicides, herbicides, insecticides, and parasiticides; chemical reagents and reactants for non-medical purposes; enzymes for use in the biotechnology industry; nucleic acid sequences, other than medical and veterinary purposes; nucleic recombinant acids; nucleic acids; DNA polymerase, other than medical and veterinary purposes; chemicals used in food processing and screening; mi...