abstract |
1,015,249. Electromagnetic relays. ERICSSON TELEPHONES Ltd. May 22, 1964 [July 3, 1963], No. 26301/63. Heading H2B. At least one of the reeds of a sealed magnetic contact unit has its contact end plated with gold from a hard bright gold solution of the acid type. The reeds are a nickel iron alloy and no preliminary coating of silver or copper is needed. |