C.F. Theodor Steinweg receives the United States patent #170,645, to the “adjustable capstan for grand piano action”, #170,646, to “capo tasto agraffe for grand piano”, and #170,647, to “cast iron frame for centennial grand piano”.
C.F. Theodor Steinweg receives the United States patent #170,645, to the “adjustable capstan for grand piano action”, #170,646, to “capo tasto agraffe for grand piano”, and #170,647, to “cast iron frame for centennial grand piano”.