This jar used to store an electric charge is credited to both E.G. von Kleist & Pieter van Musschenbroek
In October 
1745, Ewald Georg von Kleist (1700-1748) of Pomerania invented ... discovery 
became widely known, a Dutch physicist Pieter van Musschenbroek... [DOC] [TLE] Groping in the dark: magnetism and electricity from prehistory to ... [PAR] The development of a science of magnetism and electricity is presented, from the 
.... By the way, Gilbert is credited with the first use of the word "electric" (vis 
electrica).