![]() ![]() He had developed and patented the Tension Resonator for M&H, a device under the edges of the housing structure, by means of which the soundboard can be prevented from losing its curvature. Gertz was appointed secretary (commercial director) of the company in 1903 and then became president in 1906. Gertz was an independent German piano developer from Germany who had previously designed new scales for Mason & Hamlin. ![]() ![]() In 1895 the piano manufacturing department was completely reorganized by Richard W. At first they built only upright pianos, which had a patented method of vocal attitude one screw stringer called, and an improved system over the traditional design with tuning pegs should be. Mason & Hamlin also began making piano in 1883. ![]()
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