Alexander Graham Bell Letter to L.T. Stanley, Dated Washington, D.C., 29 February 1876

Résumé du livre

Letter to Mr. Stanley discussing the difficulties in securing patents at the U.S. Patent Office for Stanley's and Bell's inventions, mentioning a patent ("No.12054 Old Law - English Patent - Jacob Brett - 1848") matching Stanley's invention, and including a diagram for a new device suggested by "the gentleman who assists me."