| 摘要 |
1464364 Platinum alloy SOCIAL SERVICES SECRETARY OF STATE FOR and J W McLEAN 7 June 1974 [23 March 1973] 14189/73 Heading C7A [Also in Division A5] The metal substrate of a dental construction comprises a platinum alloy containing 1 per cent indium, 0À2 per cent tin and 0À2 per cent copper, all by weight. |
