Patent for a Beleuchtungseinrichtung für Bildwerfer, Ludwig Pani, 1931 (Q31922)
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No description defined
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Patent for a Beleuchtungseinrichtung für Bildwerfer, Ludwig Pani, 1931 | No description defined |
Statements
10 November 1931
0 references