Please note that there are a number of errors of fact in the above 19th century newspaper article as kindly pointed out below by Bill from the Piano History Centre:-
1. Schroeter did not invent the piano.
2. It was invented around 1700 by Cristofori, in Florence, although first published information was 1707.
3. "Zumple" should be Zumpe. He did not invent the piano, or make the first, but his are the oldest known square pianos, dated 1766, and made in London.