Official gazette of the United States Patent Office
United States. Patent Office
Schnell, Steve, Kirkwood, assignor to Wagner Electric Corporation. St. Louis, Mo. Braking system. 2,328,685 : Sept. 7. Schnitzer, Benjamin J. (See Donnell, L. H., and Schnitzer.) Schoeller, Walter. (See DOhrn, M., Schoeller, Laubereau, Fox, ...