4 public-domain matches

Piano Action

Cover of Das Wiener Klavier bis 1850

Das Wiener Klavier bis 1850

Beatrix Darmstädter, Alfons Huber, Rudolf Hopfner

Cover of Mackay - Piano Action, US Reissue Patent 8 of 1839

Mackay - Piano Action, US Reissue Patent 8 of 1839

John Mackay

Cover of Modern piano tuning and allied arts

Modern piano tuning and allied arts

William Braid White

Cover of Illustrated and descriptive catalogue of grand and upright piano actions, keys and hammers, organ keys, reeds and reed boards, piano and organ tools and supplies

Illustrated and descriptive catalogue of grand and upright piano actions, keys and hammers, organ keys, reeds and reed boards, piano and organ tools and supplies

Ont.) Otto Higel Co. (Toronto