Difference between revisions of "Patent for Kühlvorrichtung für Bildwerfer, Ludwig Pani, 1931 (Q31923)"
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(Created claim: Type of information (P11): source (Q98)) | (Created claim: Field (P19): lighting and projection (Q7)) | ||
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Revision as of 17:56, 2 August 2023
No description defined
| Language | Label | Description | Also known as |
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| English | Patent for Kühlvorrichtung für Bildwerfer, Ludwig Pani, 1931 | No description defined |