C.F. Theodor Steinweg receives the United States patent #233,710, to “laminated soundboard bridge constructed of alternating layers of hardwood (e.g. maple) and softwood (e.g. pine)”, and the reissue Re.9,431 of his patent #127,383.
C.F. Theodor Steinweg receives the United States patent #233,710, to “laminated soundboard bridge constructed of alternating layers of hardwood (e.g. maple) and softwood (e.g. pine)”, and the reissue Re.9,431 of his patent #127,383.