71616581
Jul 17, 1951
Oct 28, 1952
CELLULOSE ESTERS AND ETHERS AND THEIR SALTS, THERMOPLASTIC SUBSTANCES FORMED FROM CELLULOSE NITRATE AND CAMPHOR, CARBOXY-METHYL-CELLULOSE, ARTIFICIAL PLASTICS AND RESINS, MOULDING POWDERS MADE OF SYNTHETIC RESINS
Metal Goods