by Grand Duke Ernst Ludwig in 1908

Further proof of the esteemed quality of our instrument is the patent from 1908, with which Gebr. Alexander was appointed purveyor to the court of Grand Duke Ernst Ludwig of Rhine-Hesse.

by Duke of Anhalt Friedrich, by the grace of God in 1906

Since the beginning of the last century, instruments of our manufacture have been highly valued. This is evidenced by the patent from 1906, with which Gebr. Alexander was appointed purveyor to the court of the Duke Friedrich of Anhalt, by the grace of God.