1. Dr. G.M. Sternberg's electro-magnetic regulator, for dampers and valves: secured by letters patent, No. 100.462, No. 105.272. and No. 105.273 Author(s): Sternberg, George Miller, 1838-1915., author Publication: [New York?] : [publisher not identified], [1870?] Subject(s): Environment, ControlledInventions
