Provided is an electric storage device that can ensure seal in a peripheral area of a portion in a defining wall of a case through which a rivet passes even when a rivet is inserted through the defining wall of the case and the rivet is caulked. A layered spacer is formed at least at one sidewall of cell gates. The second register temporarily stores data to be programmed into cells included in a second memory cell block group, or reads and stores data of a corresponding memory cell. Routes having common prefixes with the new route are searched for in Patricia trees organized by longer mask lengths and in Patricia trees organized by shorter mask lengths to locate a chain for the new route. The hydrolyzed okara has a diminished water-holding capacity and is useful for supplementing the protein and fiber content of food products. The electric power supplying device includes a welded portion formed by heat aggregation of a part of the erected fiber portion, and the contact member is connected to the welded portion.