| 摘要 |
<p>486,280. Enamelling. MONSANTO CHEMICAL CO. Oct. 2, 1937, No. 26737. Convention date, Oct. 5, 1936. [Class 56] Iron or steel for enamelling contains 0À1-1À0 per cent of phosphorus in order to increase the resistance of the metal to sagging and distortion during the firing operation.</p> |
