Museum für Kunst und Kultur am Oberrhein
The History of M. Welte & Sons
1. Welte-Orchestrion Patents
1883 -1917
2. Patents for the Welte-Reproducing Mechanism
1904 - 1922
3. Patents for the Welte-Phototone Organ
1925 -1941
4. Successing Companies
5. The Competitors
6. Other Companies
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