Also in about 1911 Henry & S. G. Lindeman obtained an interest in the soundboard calibration device patented in 1909 by piano dealer and inventor Frank B. Long, of Los Angeles. Marketed as the "Melodigrand", this was a method for maintaining or restoring the slight crowning of a soundboard through a series of screws pressed against blocks applied directly to the panel, like Steinway & Sons' lapsed and disused system and similar to the Mason & Hamlin "tension resonator", then in force and which is still manufactured and promoted by that firm. Shown for uprights in the patent, Dolge claimed that H. & S. G. Lindeman embodied "the same in all of their pianos, with great success."