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The Epstein Accumulator Co Ltd. of 21 Blythe Road, West Kensington, London, W.
c.1891 Company formed by Ludwig Epstein
1892 Crystal Palace Electrical Exhibition. Secondary batteries. 
1900 The Epstein Electric Accumulator Syndicate granted W. O. Rooper and Robins, electrical engineers of Stafford, sole licence to make and sell Epstein accumulator plates and storage batteries. W. O. Rooper and Robins manufactured the plates by Mr Epstein's original process with the assistance of many of his staff at their new works at Stafford.