Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,960 pages of information and 233,606 images on early companies, their products and the people who designed and built them.
of Barking, maker of dry accumulators
1940 Patent application, by the company and Jonas Abraham Szper, a Polish citizen of the company's address, for improvements in electric storage batteries
and several other patents
1964 Acquired by General Electrical and Mechanical Systems