| 摘要 |
516,453. Accumulators YOUNG ACCUMULA- - TOR CO. (-1929), Ltd. MARTIS, H. DE., anc CLARK, S. J. June 29 1938, No. 19260. [Class 53] A lead grid has main longitudinal bars 1 and supplementary strands 4 mechanically weaker than the bars 1, staggered cross strands 5 being arranged as shown. |
