William Steinway’s diary: “Theodore examines the Weber piano, pronounces the Action and connecting of the bridges on Soundboard an infringement our two patents of 1869-1866 No. of Weber Upright piano 10297.”
William Steinway’s diary: “Theodore examines the Weber piano, pronounces the Action and connecting of the bridges on Soundboard an infringement our two patents of 1869-1866 No. of Weber Upright piano 10297.”