Improvements in lead accumulators

摘要

540,912. Batteries. McCORMICK, H. May 1, 1941, No. 6062/40. [Class 53] The paste of negative electrodes of lead accumulators contains from 2 to 15 per cent of commercial charcoal, preferably washed to eliminate impurities. Specifications 5826/97, 235,530, [both in Class 53and 496,554 are referred to.