71606431
Nov 15, 1950
Jul 29, 1952
CARBOXYMETHYLCELLULOSE, HYDROXYAETHYLCELLULOSE, METHYLCELLULOSE, OXYCELLULOSE, ALLYLCELLULOSE, AETHYLCELLULOSE, BENZYLCELLULOSE, AND CELLULOSE DERIVATIVES CONTAINING TWO OR MORE OF THE ABOVE MENTIONED COMPOUNDS
Metal Goods