| 摘要 |
551,056. Copper alloys. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 3, 1941, No. 12785. Convention date, Oct. 4, 1940. [Class 82 (i)] [Also in Group XXXVI] Magnets are made of an alloy of copper, nickel, and cobalt containing, for example, 60 per cent. copper, 20 per cent. nickel, and 20 per cent. cobalt, and may.be copperplated. |
